Encyclopedia of Earth
Encyclopedia of Earth: Physics & Chemistry: Calcium
Information about the element, Calcium, atomic number 20. Covers physical and atomic properties, sources, its role in geochemical cycles, how abundant it is on the Earth, its isotopes, some compounds of calcium, and its importance to...
TED Talks
Ted: Ted Ed: Calcium: Periodic Table of Videos
The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about calcium. Professor Poliakoff thinks calcium is a very British element. [8:56]
Web Elements
Web Elements Periodic Table: Calcium
A very valuable site with a wealth of data on calcium, its uses and properties and some important reactions involving calcium.
Chemicool
Chemicool: Calcium
A nice Chemicool site with a clearly presented summary of many important properties of calcium.
Science Struck
Science Struck: Versatile Uses of Calcium Carbonate
Learn where calcium carbonate can be found and how it is used to support human health, in industry, agriculture, the environment, and in other ways.
Science Struck
Science Struck: Uses of Quicklime
Learn what quicklime is, how it can burn one's skin, how it is made, its chemical properties, and how it is used in industry and for other things.
Ducksters
Ducksters: Chemistry for Kids: Elements: Calcium
Kids learn about the element calcium and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of calcium.
Science Struck
Science Struck: Uses of Calcium Chloride
Learn about some uses of calcium chloride as a food additive, as a drying agent, for de-icing, in concrete mixes, and for its exothermic properties.
Science Struck
Science Struck: Facts About the Discovery and Applications of Calcium
Learn how calcium, and other elements, were discovered by Sir Humphrey Davy, about its chemical properties, and about its uses and applications.
Science4Fun
Science4 Fun: Calcium
Find out about the characteristics, properties, and uses of calcium while learning where it is found and who discovered it.