- published: 18 Feb 2014
- views: 19224
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate (CaCO3). Most limestone is composed of skeletal fragments of marine organisms such as coral, forams and molluscs.
Limestone makes up about 10% of the total volume of all sedimentary rocks. The solubility of limestone in water and weak acid solutions leads to karst landscapes, in which water erodes the limestone over thousands to millions of years. Most cave systems are through limestone bedrock.
Limestone has numerous uses: as a building material, as aggregate for the base of roads, as white pigment or filler in products such as toothpaste or paints, and as a chemical feedstock for the production of lime.
The first geologist to distinguish limestone from dolomite was Belsazar Hacquet in 1778.
Like most other sedimentary rocks, most limestone is composed of grains. Most grains in limestone are skeletal fragments of marine organisms such as coral or foraminifera. Other carbonate grains comprising limestones are ooids, peloids, intraclasts, and extraclasts. These organisms secrete shells made of aragonite or calcite, and leave these shells behind when they die.
Limestone cycle revision video that covers all aspects of the GCSE specification on this topic. The videoscribe includes thermal decomposition of metal carbonates, reactions of metal carbonates with acids, advantages and disadvantages of quarrying, the limestone cycle equations and chemical weathering.
A video about limestone for GCSE Core Science, for AQA science. Check the website for a complete video list that covers Core (all unit 1s), Additional (all unit 2s) and Separate Science (all unit 3s). www.my-GCSEscience.com
http://www.tngun.com/identifying-limestone/ http://www.amazon.com/Kingfisher-Field-Guide-Minerals-guides/dp/086272693X/Sheschinc-20 I needed some limestone to work some cement experiments trying to replicate both the Portland cement patent, and to make slaked lime for mortar mix. This meant I had to be able to identify limestone. Luckily since limestone is calcium carbonate, ( a base). Simple chemistry ensures that when it makes contact with acid it will fizz (which is CO2 being released) as the acid and the base attempt to counteract each other. If you have a large weathered rock, you may get better results if you smash it into little pieces -- limestone is brittle and crushes well. Then simply drop some strong vinegar or weak muriatic (hydrochloric) acid on the rock. If it fizzles,...
Learn the basics about limestone cycle - limestone, quicklime and slaked lime. What are their properties, similarities and differences? Find out more in this video! This Open Educational Resource is free of charge, under a Creative Commons License: Attribution-NonCommercial CC BY-NC ( View License Deed: http://creativecommons.org/licenses/by-nc/4.0/ ). You are allowed to download the video for nonprofit, educational use. If you would like to modify the video, please contact us: info@fuseschool.org SUBSCRIBE to the Fuse School YouTube channel for many more educational videos. Our teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. This video is part of 'Chemistry for All' - a Chemistry Education project by our Charity...
This video helps you to evaluate the positive and negative aspects of quarrying for limestone.
Limestone reaction after the combustion process for 72 hours when put in water. Limestone will melt and become smooth and lime powder during the melting process occurs so that the heating evaporating water until exhausted.
In this video we give a detailed breakdown of Limestone and what the different uses of Limestone are. At Fuse School, teachers and animators come together to make fun & easy-to-understand videos in Chemistry, Biology, Physics, Maths & ICT. Our OER are available free of charge to anyone. Make sure to subscribe - we are going to create 3000 more! The Fuse School is currently running the Chemistry Journey project - a Chemistry Education project by The Fuse School sponsored by Fuse. These videos can be used in a flipped classroom model or as a revision aid. Find our other Chemistry videos here: https://www.youtube.com/playlist?list=PLW0gavSzhMlReKGMVfUt6YuNQsO0bqSMV Be sure to follow our social media for the latest videos and information! Twitter: https://twitter.com/fuseschool Facebook:...
Limestone is a sedimentary rock composed largely of the minerals calcite and aragonite, which ... Limestone has numerous uses: as a building material, as aggregate for the base of roads, as white pigment or .... The National Institute for Occupational Safety and Health (NIOSH) has set a recommended exposure limit (REL)
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