In chemistry, a chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e. without breaking chemical bonds. They can be solids, liquids or gases.

Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, simple or seemingly pure substances found in nature can in fact be mixtures of chemical substances. For example, tap water may contain small amounts of dissolved sodium chloride and compounds containing iron, calcium and many other chemical substances.

Chemical substances exist as solids, liquids, gasses, or plasma and may change between these phases of matter with changes in temperature or pressure. Chemical reactions convert one chemical substance into another.

Forms of energy, such as light and heat, are not considered to be matter, and thus they are not "substances" in this regard.

Definition

Chemical substances (also called pure substances) are often defined as "any material with a definite chemical composition" in most introductory general chemistry textbooks. According to this definition a chemical substance can either be a pure chemical element or a pure chemical compound. But, there are exceptions to this definition; a pure substance can also be defined as a form of matter that has both definite composition and distinct properties. The chemical substance index published by CAS also includes several alloys of uncertain composition. Non-stoichiometric compounds are a special case (in inorganic chemistry) that violates the law of constant composition, and for them, it is sometimes difficult to draw the line between a mixture and a compound, as in the case of palladium hydride. Broader definitions of chemicals or chemical substances can be found, for example: "the term 'chemical substance' means any organic or inorganic substance of a particular molecular identity, including – (i) any combination of such substances occurring in whole or in part as a result of a chemical reaction or occurring in nature"

History

The concept of a "chemical substance" became firmly established in the late eighteenth century after work by the chemist Joseph Proust on the composition of some pure chemical compounds such as basic copper carbonate. He deduced that, "All samples of a compound have the same composition; that is, all samples have the same proportions, by mass, of the elements present in the compound." This is now known as the law of constant composition. Later with the advancement of methods for chemical synthesis particularly in the realm of organic chemistry; the discovery of many more chemical elements and new techniques in the realm of analytical chemistry used for isolation and purification of elements and compounds from chemicals that led to the establishment of modern chemistry, the concept was defined as is found in most chemistry textbooks. However, there are some controversies regarding this definition mainly because the large number of chemical substances reported in chemistry literature need to be indexed.

Chemical elements

An element is a chemical substance that is made up of a particular kind of atoms and hence cannot be broken down or transformed by a chemical reaction into a different element, though it can be transmutated into another element through a nuclear reaction. This is so, because all of the atoms in a sample of an element have the same number of protons, though they may be different isotopes, with differing numbers of neutrons.

There are about 120 known elements, about 80 of which are stable – that is, they do not change by radioactive decay into other elements. However, the number of chemical substances that are elements can be more than 120, because some elements can occur as more than a single chemical substance (allotropes). For instance, oxygen exists as both diatomic oxygen (O₂) and ozone (O₃). The majority of elements are classified as metals. These are elements with a characteristic lustre such as iron, copper, and gold. Metals typically conduct electricity and heat well, and they are malleable and ductile. Around a dozen elements, such as carbon, nitrogen, and oxygen, are classified as non-metals. Non-metals lack the metallic properties described above, they also have a high electronegativity and a tendency to form negative ions. Certain elements such as silicon sometimes resemble metals and sometimes resemble non-metals, and are known as metalloids.

Chemical compounds

A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions. Two or more elements combined into one substance through a chemical reaction form a chemical compound. All compounds are substances, but not all substances are compounds.

A chemical compound can be either atoms bonded together in molecules or crystals in which atoms, molecules or ions form a crystalline lattice. Compounds based primarily on carbon and hydrogen atoms are called organic compounds, and all others are called inorganic compounds. Compounds containing bonds between carbon and a metal are called organometallic compounds.

Compounds in which components share electrons are known as covalent compounds. Compounds consisting of oppositely charged ions are known as ionic compounds, or salts.

In organic chemistry, there can be more than one chemical compound with the same composition and molecular weight. Generally, these are called isomers. Isomers usually have substantially different chemical properties, may be isolated and do not spontaneously convert to each other. A common example is glucose vs. fructose. The former is an aldehyde, the latter is a ketone. Their interconversion requires either enzymatic or acid-base catalysis. However, there are also tautomers, where isomerization occurs spontaneously, such that a pure substance cannot be isolated into its tautomers. A common example is glucose, which has open-chain and ring forms. One cannot manufacture pure open-chain glucose because glucose spontaneously cyclizes to the hemiacetal form.

Substances versus mixtures

All matter consists of various elements and chemical compounds, but these are often intimately mixed together. Mixtures contain more than one chemical substance, and they do not have a fixed composition. In principle, they can be separated into the component substances by purely mechanical processes. Butter, soil and wood are common examples of mixtures.

Grey iron metal and yellow sulfur are both chemical elements, and they can be mixed together in any ratio to form a yellow-grey mixture. No chemical process occurs, and the material can be identified as a mixture by the fact that the sulfur and the iron can be separated by a mechanical process, such as using a magnet to attract the iron away from the sulfur.

In contrast, if iron and sulfur are heated together in a certain ratio (1 atom of iron for each atom of sulfur, or by weight, 56 grams (1 mol) of iron to 32 grams (1 mol) of sulfur), a chemical reaction takes place and a new substance is formed, the compound iron(II) sulfide, with chemical formula FeS. The resulting compound has all the properties of a chemical substance and is not a mixture. Iron(II) sulfide has its own distinct properties such as melting point and solubility, and the two elements cannot be separated using normal mechanical processes; a magnet will be unable to recover the iron, since there is no metallic iron present in the compound.

Chemicals versus chemical substances

While the term ''chemical substance'' is a precise technical term that is synonymous with "chemical" for professional chemists, the meaning of the word ''chemical'' varies for non-chemists within the English speaking world or those using English. For industries, government and society in general in some countries, the word ''chemical'' includes a wider class of substances that contain many mixtures of such chemical substances, often finding application in many vocations. In countries that require a list of ingredients in products, the "chemicals" listed would be equated with "chemical substances".

Within the chemical industry, manufactured "chemicals" are chemical substances, which can be classified by production volume into bulk chemicals, fine chemicals and chemicals found in research only. Bulk chemicals are produced in very large quantities, usually with highly optimized continuous processes and to a relatively low price. Fine chemicals are produced at a high cost in small quantities for special low-volume applications such as biocides, pharmaceuticals and speciality chemicals for technical applications. Research chemicals are produced individually for research, such as when searching for synthetic routes or screening substances for pharmaceutical activity. In effect, their price per gram is very high, although they are not sold. The cause of the difference in production volume is the complexity of the molecular structure of the chemical. Bulk chemicals are usually much less complex. While fine chemicals may be more complex, many of them are simple enough to be sold as "building blocks" in the synthesis of more complex molecules targeted for single use, as named above. The ''production'' of a chemical includes not only its synthesis but also its purification to eliminate by-products and impurities involved in the synthesis. The last step in production should be the analysis of batch lots of chemicals in order to identify and quantify the percentages of impurities for the buyer of the chemicals. The required purity and analysis depends on the application, but higher tolerance of impurities is usually expected in the production of bulk chemicals. Thus, the user of the chemical in the US might chose between the bulk or "technical grade" with higher amounts of impurities or a much purer "pharmaceutical grade" (labeled "USP", United States Pharmacopeia).

Naming and indexing

Every chemical substance has one or more systematic names, usually named according to the IUPAC rules for naming. An alternative system is used by the Chemical Abstracts Service (CAS).

Many compounds are also known by their more common, simpler names, many of which predate the systematic name. For example, the long-known sugar glucose is now systematically named 6-(hydroxymethyl)oxane-2,3,4,5-tetrol. Natural products and pharmaceuticals are also given simpler names, for example the mild pain-killer Naproxen is the more common name for the chemical compound (S)-6-methoxy-α-methyl-2-naphthaleneacetic acid.

Chemists frequently refer to chemical compounds using chemical formulae or molecular structure of the compound. There has been a phenomenal growth in the number of chemical compounds being synthesized (or isolated), and then reported in the scientific literature by professional chemists around the world. An enormous number of chemical compounds are possible through the chemical combination of the known chemical elements. As of May 2011, about sixty million chemical compounds are known. The names of many of these compounds are often nontrivial and hence not very easy to remember or cite accurately. Also it is difficult to keep the track of them in the literature. Several international organizations like IUPAC and CAS have initiated steps to make such tasks easier. CAS provides the abstracting services of the chemical literature, and provides a numerical identifier, known as CAS registry number to each chemical substance that has been reported in the chemical literature (such as chemistry journals and patents). This information is compiled as a database and is popularly known as the Chemical substances index. Other computer-friendly systems that have been developed for substance information, are: SMILES and the International Chemical Identifier or InChI.

Chemical formula

+Identification of a typical chemical substance
Common name	IUPAC nomenclature>Systematic name	|	Chemical structure	CAS registry number	International Chemical Identifier>InChI
alcohol, orethyl alcohol	ethanol	C2H5OH		[64-17-5]	1/C2H6O/c1-2-3/h3H,2H2,1H3

Isolation, purification, characterization, and identification

Often a pure substance needs to be isolated from a mixture, for example from a natural source (where a sample often contains numerous chemical substances) or after a chemical reaction (which often give mixtures of chemical substances).

See also

IUPAC nomenclature

Prices of elements and their compounds

Chemical safety signs

Notes and references

Category:Chemistry

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name	Jessica Alba
birth name	Jessica Marie Alba
birth date	April 28, 1981
birth place
occupation	Actress
years active	1994–present
spouse
children	2 }}

Jessica Marie Alba (born April 28, 1981) is an American television and film actress. She began her television and movie appearances at age 13 in ''Camp Nowhere'' and ''The Secret World of Alex Mack'' (1994). Alba rose to prominence as the lead actress in the television series ''Dark Angel'' (2000–2002). Alba later appeared in various films including ''Honey'' (2003), ''Sin City'' (2005), ''Fantastic Four'' (2005), ''Into the Blue'' (2005), ''Fantastic Four: Rise of the Silver Surfer'' and ''Good Luck Chuck'' both in 2007.

Alba is considered a sex symbol and often generates media attention for her looks. She appears on the "Hot 100" section of ''Maxim'' and was voted number one on AskMen.com's list of "99 Most Desirable Women" in 2006, as well as "Sexiest Woman in the World" by ''FHM'' in 2007. The use of her image on the cover of the March 2006 ''Playboy'' sparked a lawsuit by her, which was later dropped. She has also won various awards for her acting, including the Choice Actress Teen Choice Award and Saturn Award for Best Actress on Television, and a Golden Globe nomination for her lead role in the television series ''Dark Angel''.

Early life

Alba was born in Pomona, California to Catherine (née Jensen) and Mark Alba. Her mother is of Danish and French Canadian descent and her father is Mexican American. She has a younger brother, Joshua. Her father's Air Force career took the family to Biloxi, Mississippi and Del Rio, Texas, before settling back in California when she was nine years old. Alba described her family as being a "very conservative family – a traditional, Catholic, Latin American family" and herself as very liberal; she says she had identified herself as a "feminist" as early as age five.

Alba's early life was marked by a multitude of physical maladies. During childhood, she suffered from collapsed lungs twice, had pneumonia 4–5 times a year, as well as a ruptured appendix and a tonsillar cyst. Alba became isolated from other children at school, because she was in the hospital so often due to her illnesses that no one knew her well enough to befriend her. Alba has also had asthma since she was a child. Alba has said that her family's frequent moving also contributed to her isolation from her peers. She has acknowledged that she has suffered from obsessive–compulsive disorder during her childhood. Alba graduated from high school at age 16, and she subsequently attended the Atlantic Theater Company.

Career

Alba expressed interest in acting since the age of five. In 1992, the 11-year-old Alba persuaded her mother to take her to an acting competition in Beverly Hills, California, whose grand prize was free acting classes. Alba won the grand prize, and took her first acting lessons. An agent signed Alba nine months later. Her first appearance on film was a small role in the 1994 feature ''Camp Nowhere'' as Gail. She was originally hired for two weeks but her role turned into a two-month job in a leading role when one of the prominent actresses dropped out.

Alba appeared in two national television commercials for Nintendo and J.C. Penney as a child. She was later featured in several independent films. She branched out into television in 1994 with a recurring role as the vain Jessica in three episodes of the Nickelodeon comedy series ''The Secret World of Alex Mack''. She then performed the role of Maya in the first two seasons of the television series ''Flipper''. Under the tutelage of her lifeguard mother, Alba learned to swim before she could walk, and she was a PADI-certified scuba diver, skills which were put to use on the show, which was filmed in Australia.

In 1998, she appeared as Melissa Hauer in a first-season episode of the Steven Bochco crime-drama ''Brooklyn South'', as Leanne in two episodes of ''Beverly Hills, 90210'', and as Layla in an episode of ''The Love Boat: The Next Wave''. In 1999, she appeared in the Randy Quaid comedy feature ''P.U.N.K.S.''. After Alba graduated from high school, she studied acting with William H. Macy and his wife, Felicity Huffman, at the Atlantic Theater Company, which was developed by Macy and Pulitzer Prize-winning playwright and film director, David Mamet.

Alba rose to greater prominence in Hollywood in 1999 after appearing as a member of a snobby high school clique in the Drew Barrymore romantic comedy ''Never Been Kissed'', and as the female lead in the 1999 comedy-horror film ''Idle Hands'', opposite Devon Sawa.

Her big break came when writer/director James Cameron picked Alba from a pool of 1,200 candidates for the role of the genetically-engineered super-soldier, Max Guevara, on the Fox sci-fi television series ''Dark Angel''. Co-created by Cameron, the series starred Alba, and ran for two seasons until 2002, earning her critical acclaim as well as a Golden Globe nomination. Alba later revealed that she had suffered from anorexia while in preparation for ''Dark Angel''.

Alba has been well-received in popular culture. She received the Teen Choice Award for ''Choice Actress'' and Saturn Award for Best Actress for her role in ''Dark Angel''. In 2006, Alba received an MTV Movie Award for "Sexiest Performance" for ''Sin City''. Her acting has also drawn criticism, however, as she was nominated for a 2007 Razzie Award for Worst Actress for her performances in ''Awake'', ''Good Luck Chuck'', and ''Fantastic Four: Rise of the Silver Surfer''. She was also nominated for the same award in 2005 for her performances in ''Fantastic Four'' and ''Into the Blue''.

Alba's most notable film roles have included an aspiring dancer-choreographer in ''Honey'', exotic dancer Nancy Callahan in ''Sin City'', and as the Marvel Comics character Sue Storm, the Invisible Woman in ''Fantastic Four''. She then appeared in its sequel, in ''Into the Blue'' later that year, and ''Good Luck Chuck'' a few years later. Alba hosted the 2006 MTV Movie Awards and performed sketches spoofing the movies ''King Kong'', ''Mission: Impossible 3'', and ''The Da Vinci Code''. In February 2008, she hosted the Academy of Motion Picture Arts and Sciences' Science and Technical Awards. Alba has been represented by talent agents Patrick Whitesell and Brad Cafarelli.

In 2008, Alba made her acting transition to the horror-film genre in ''The Eye'', a remake of the Hong Kong original. The film was released on February 1, 2008. Though the film was not well received by critics, Alba's performance was both positively and negatively received. Alba won a Teen Choice for Choice Movie Actress: Horror/Thriller and a Razzie Award for Worst Actress-nomination. Also in 2008, Alba starred alongside Mike Myers and Justin Timberlake in "box office bomb" ''The Love Guru''. Alba was nominated for a Razzie Award for Worst Actress.

In late 2008, Alba signed on to star as the lead role in ''An Invisible Sign of My Own''. The movie finished filming in November 2008. The film is in post-production and set to be released in 2011.

Alba starred alongside Kate Hudson and Casey Affleck in the film adaption of the book of the same name, ''The Killer Inside Me''. In the movie, Alba played Joyce Lakeland, a prostitute. The film was released in 2010. Also in 2010, Alba starred in the romantic comedy ''Valentine's Day'', alongside Julia Roberts, Anne Hathaway, Jessica Biel, Emma Roberts, Ashton Kutcher, and Jennifer Garner. The film was released on February 12, 2010.

In August 2010, it was announced that Alba will appear in ''Spy Kids 4''. She appeared on Maxim's 2011 Hot 100 list, finishing 21.

Public image

In 2001, Alba was ranked No. 1 on ''Maxim'' magazine's Hot 100 list. She said that "I have to go to certain lengths to use sexuality to my advantage, while guiding people to thinking the way I want them to." In 2005, Alba was named one of ''People'' magazine's 50 Most Beautiful People, and also appeared in the magazine's 100 Most Beautiful list in 2007. In 2002, Alba was voted as the fifth Sexiest Female Star for 2002 in a Hollywood.com poll, No.4 in the Top 10 Sci-Fi Babes, No.6 in ''FHM'''s Sexiest Girls for their poll, and ranked at No.12 in ''Stuff'' magazine's "102 Sexiest Women in the World" 2002 edition. In 2005, Alba was ranked at No.5 on the ''Maxim'' magazine's Hot 100 list.

On the cover of the March 2006 issue, ''Playboy'' magazine named Alba among its 25 Sexiest Celebrities, and the Sex Star of the Year. Alba was involved in litigation against ''Playboy'' for its use of her image (from a promotional shot for ''Into the Blue'') without her consent, which she contends gave the appearance that she was featured in the issue in a "nude pictorial". However, she later dropped the lawsuit after receiving a personal apology from ''Playboy'' owner Hugh Hefner, who agreed to make donations to two charities that Alba has supported.

When reports surfaced that a 21-year-old Chinese girl was seeking plastic surgery to resemble Alba in order to win back an ex-boyfriend, the star spoke out against the perceived need to change one's appearance for love.

In 2006, Alba ranked No.3 on E! Television's 101 Sexiest Celebrity Bodies. In 2006 readers of AskMen.com voted Alba No. 1 on ''99 Most Desirable Women'', while in 2007, ''Maxim Magazine'' placed Alba on the number 2 spot of their "Top 100". Both ''GQ'' and ''In Style'' had Alba on their June 2008 covers, and in May, after eight million votes, ''FHM'' (UK and USA editions) named Alba the winner as "2007's Sexiest Woman in the World". Alba has been regarded as one of the world's most attractive women, being named to Maxim's Hot 100 in 2008. In 2007, Alba was ranked in at No.1 in FHM's Sexiest Girls of 2007 poll, in the magazine's Latvian edition. Alba was ranked No.4 on Empire Magazine's 100 Sexiest Movie Stars in 2007. In 2006 and 2007, Alba was voted No.1 as the most sexy woman in the world by the Norwegian FHM. Alba appeared in the 2009 Campari calendar. Campari printed 9,999 copies of the calendar featuring photos of Alba posing sexually in swimsuits, and high heels. In 2008, Alba was ranked No.34 on ''Maxim'' magazine's Hot 100 list, was ranked No.2 on ''Wizard'' magazine's "Sexiest Women of TV" list, and was named in ''GQ'' Magazine one of the 25 Sexiest Women in film of all time. Alba is the only woman who has made the ''Maxim Magazine'' Hot 100 list in all the years it was published; from 2000 to 2011.

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Alba fears being typecast as a sex kitten based on the bulk of parts offered to her, commenting, "Somehow, I don't think this is happening to Natalie Portman." In the interview, Alba said she wants to be taken seriously as an actress but believes she needs to do movies that she would otherwise not be interested in to build her career, stating that eventually she hopes to be more selective in her film projects. Alba also maintains a strict no-nudity clause in her contract. She was given the option to appear nude in ''Sin City'' by the film's directors, Frank Miller and Robert Rodriguez, but declined the offer, saying, "I don't do nudity. I just don't. Maybe that makes me a bad actress. Maybe I won't get hired in some things. But I have too much anxiety". She remarked of a ''GQ'' shoot in which she was scantily clad, "They didn't want me to wear the granny panties, but I said, 'If I'm gonna be topless I need to wear granny panties."

Personal life

Religion

Alba was raised as a Catholic throughout her teenage years, but left the church after four years because she felt she was being judged for her appearance, explaining: "Older men would hit on me, and my youth pastor said it was because I was wearing provocative clothing, when I wasn't. It just made me feel like if I was in any way desirable to the opposite sex that it was my fault, and it made me ashamed of my body and being a woman".

Alba also had objections to the church's condemnations of premarital sex and homosexuality, and what she saw as a lack of strong female role models in the Bible, explaining "I thought it was a nice guide, but it certainly wasn't how I was going to live my life." Her "religious devotion [began] to wane" at the age of 15 when she guest-starred as a teenager with gonorrhea in the throat in a 1996 episode of the television series ''Chicago Hope''. Her friends at church reacted negatively to her role, making her lose faith in the church. However, she has stated that she still holds her belief in God despite leaving the church.

Relationships and family

While filming ''Dark Angel'' in January 2000, Alba began a three year relationship with her co-star Michael Weatherly, which caused controversy due to their twelve year age gap. Weatherly proposed to Alba on her twentieth birthday, which she accepted. In August 2003, Alba and Weatherly announced that they'd ended their relationship. In July 2007, Alba spoke out about the breakup, saying "I don't know [why I got engaged]. I was a virgin. He was 12 years older than me. I thought he knew better. My parents weren't happy. They're really religious. They believe God wouldn't allow the Bible to be written if it wasn't what they are supposed to believe. I'm completely different." Alba had at one time said she envisioned a much older man as her ideal partner, making references to Morgan Freeman, Sean Connery, Robert Redford, and Michael Caine. She said, "I have this thing for older men. They've been around and know so much."

Alba met Cash Warren, son of actor Michael Warren, while filming ''Fantastic Four'' in 2004. Alba married Warren in Los Angeles on Monday, May 19, 2008. They have two daughters: Honor Marie Warren (born 2008) and Haven Garner Warren (born 2011). The first pictures of Honor Marie appeared in the July 2008 issue of ''OK!'' magazine, which paid a reported $1.5 million for them. Alba has said that she would like to have more children.

Charity and politics

In 2005, Alba offered her acting talents for free, to raise money for AIDS charity Amfar at the Cannes Film Festival. The Industry had held a benefit for the US research foundation. Alba had caused "the greatest stir" by promising to star as an unpaid actress in one of ''The Lord of the Rings'' producer Bob Weinstein's movies, if Weinstein agreed to bid $100,000 for tennis lessons with sports stars Monica Seles and Boris Becker.

Alba's charity work includes participation with Clothes Off Our Back, Habitat for Humanity, National Center for Missing and Exploited Children, Project HOME, RADD, Revlon Run/Walk for Women, SOS Children Villages, Soles4Souls, and Step up. Alba openly endorsed and supported Democratic presidential hopeful Barack Obama during the 2008 primary season. Alba is an ambassador for the 1Goal movement to provide education to children in Africa.

Alba posed for a bondage-themed print advertising campaign by Declare Yourself, a campaign encouraging voter registration among youth for the 2008 United States presidential election. The ads photographed by Mark Liddell, which feature Alba wrapped in and gagged with black tape, drew national media attention. The ads were described by some as being "Shocking". Alba said of doing the advertisements that "it didn't freak me out at all." Alba also said "I think it is important for young people to be aware of the need we have in this country to get them more active politically," and "People respond to things that are shocking."

In June 2009, while filming ''The Killer Inside Me'' in Oklahoma City, Alba was involved in a controversy with residents when she pasted posters of sharks around town. Alba said that she was trying to bring attention to the diminishing population of great white sharks. Media outlets speculated that Alba would be pursued and charged with vandalism. On June 16, 2009, Oklahoma City police said that they would not pursue criminal charges against Alba, because none of the property owners wanted to pursue it. Alba apologized in a statement to ''People'' magazine and said that she regretted her actions. She later donated an undisclosed amount of money (over $500) to the United Way, whose billboard she had obscured with one of the shark posters.

In 2011, Alba participated in a two day lobbying effort in Washington D.C. in support of the Safe Chemicals Act, a revision of the Toxic Substances Control Act of 1976.

Filmography

Film

! Year	! Title	! Role	Notes
1994	''Camp Nowhere''	Gail	Film debut
1995	''Venus Rising''	Young Eve
	''P.U.N.K.S.''	Samantha Swoboda
''Never Been Kissed''	Kirsten Liosis
''Idle Hands''	Molly
2000		Chloe
	''The Sleeping Dictionary''	Selima
	Honey Daniels	Teen Choice Award for Breakout Movie Star, Actress – Drama/Action Adventure, Chemistry and LiplockNominated
		Nancy Callahan	MTV Movie Award for Sexiest PerformanceNominated – Saturn Award for Best Supporting ActressNominated – Alma Award
		Nominated –
	Sam
	''[[Knocked Up''	Herself	Uncredited Cameo
''Fantastic Four: Rise of the Silver Surfer''	Sue Storm / Invisible Woman	Blimp Award for Favorite Female Movie Star
''The Ten''	Liz Anne Blazer
''Good Luck Chuck''	Cam Wexler
	Sam Lockwood
		Sydney Wells
''Meet Bill''	Lucy
''The Love Guru''	Jane Bullard
		Morely Clarkson
	Joyce Lakeland
	Special Agent Sartana Rivera
''An Invisible Sign''	Mona Gray
''Little Fockers''	Andi Garcia
2011	''Spy Kids 4: All the Time in the World''	Marissa Wilson

Television

! Year	! Title	! Role	Notes
1994	''The Secret World of Alex Mack''	Jessica	"School Dance" (Season 1, Episode 5)"Hoop War" (Season 1, Episode 2)"The Accident" (Season 1, Episode 1)
1995–1997		Maya Graham	Recurring characterNominated – Young Star Award-Best Performance by a Young Actress in a Daytime TV Program (1998)
1996	''ABC Afterschool Special''	Christy	"Too Soon for Jeff" (Season 25, Episode 1)
1996	''Chicago Hope''	Florie Hernandez	"Sexual Perversity in Chicago Hope" (Season 2, Episode 18)
1998	''Brooklyn South''	Melissa Hauer	"Exposing Johnson" (Season 1, Episode 12)
1998	''Beverly Hills, 90210''	Leanne	"Making Amends" (Season 8, Episode 23)"The Nature of Nurture" (Season 8, Episode 25)
1998	''The Love Boat: The Next Wave''	Layla	"Remember?" (Season 1, Episode 2)
2000–2002		Max Guevara / X5-452	Lead RoleNominated – Golden Globe Award for Best Actress – Television Series Drama (2000)Won – Saturn Award for Best Actress on Television (2001)Nominated – Young Artist Award for Best Performance in a TV Drama Series – Leading Young Actress (2001)Won – Teen Choice Award for TV – Choice Actress (2001)Won – TV Guide Award TV Guide Award for Breakout Star of the Year (2001)Nominated TV Guide Award TV Guide Award for Actress of the Year in a New Series (2001)Nominated – ALMA Award for Outstanding Actress in a Television Series (2002)Nominated – Saturn Award for Best Actress in a Television Series (2002)Nominated – Kid's Choice Award for Favorite Female Action Hero (2002)Nominated – Teen Choice Award for TV – Choice Actress-Drama (2002)
2003	''MADtv''	Jessica Simpson	"Episode #9.5" (Season 9, Episode 5)
2004		Herself	"The Review" (Season 1, Episode 2)
2005	''Trippin'	Herself	"Costa Rica" (Season 1, Episode 6)"Honduras" (Season 1, Episode 5)
2009		Sophie	"Stress Relief" (Season 5, Episode 15)

Awards

! Year	! Awards	! Category	! Nominated Work	! Result
2001	ALMA Award	Breakthrough Actress of the Year	None
2005	Young Hollywood Awards	Superstar of Tomorrow	None
	TV Land Awards	Little Screen / Big Screen Star (Women)	None
	Hottest Jessica	None
	People's Choice Awards	Favorite Female Action Star	None
People's Choice Awards	Favorite Leading Lady	None

References

External links

Category:1981 births Category:Actors from California Category:Actors from Mississippi Category:Actors from Texas Category:American child actors Category:American film actors

Category:American people of French-Canadian descent Category:American people of Mexican descent Category:American television actors

Category:Living people Category:Military brats Category:People from Biloxi, Mississippi Category:People from Pomona, California Category:People from Val Verde County, Texas

ar:جيسيكا ألبا an:Jessica Alba az:Cessika Alba bn:জেসিকা অ্যালবা bs:Jessica Alba bg:Джесика Алба ca:Jessica Alba cs:Jessica Alba da:Jessica Alba de:Jessica Alba et:Jessica Alba el:Τζέσικα Άλμπα es:Jessica Alba eo:Jessica Alba eu:Jessica Alba fa:جسیکا آلبا fr:Jessica Alba ga:Jessica Alba gv:Jessica Alba gl:Jessica Alba ko:제시카 알바 hy:Ջեսսիկա Ալբա hi:जेसिका एल्बा hr:Jessica Alba io:Jessica Alba id:Jessica Alba is:Jessica Alba it:Jessica Alba he:ג'סיקה אלבה jv:Jéssica Alba kn:ಜೆಸ್ಸಿಕಾ ಆಲ್ಬಾ ka:ჯესიკა ალბა lv:Džesika Alba lt:Jessica Alba hu:Jessica Alba mk:Џесика Алба mr:जेसिका अल्बा ms:Jessica Alba nl:Jessica Alba ne:जेस्सिका अल्बा ja:ジェシカ・アルバ no:Jessica Alba pl:Jessica Alba pt:Jessica Alba ro:Jessica Alba ru:Альба, Джессика sq:Jessica Alba simple:Jessica Alba sk:Jessica Albová sl:Jessica Alba sr:Џесика Алба sh:Jessica Alba fi:Jessica Alba sv:Jessica Alba tl:Jessica Alba ta:ஜெசிகா ஆல்பா th:เจสสิกา อัลบา tr:Jessica Alba uk:Джессіка Альба vi:Jessica Alba wuu:件西卡 阿尔白 zh:潔西卡·艾巴