Not naturally on Earth; calcium is too reactive with oxygen and water vapor to remain in a pure form outside a container.
Pure calcium can be found in mineral form in rocks, such as limestone and marble, as well as in bones and teeth of animals. It is also available in dietary sources such as dairy products, leafy green vegetables, and fortified foods.
Calcium is usually found in compounds rather than as a pure element. Common calcium compounds include calcium carbonate (found in limestone and eggshells) and calcium hydroxide (used in cement and as a food additive).
A pure sample of calcium is a silver-white metal that is highly reactive and not typically found in its elemental form in nature. It is commonly found in compound form, such as calcium carbonate in rocks like limestone, or in calcium phosphate in bones and teeth.
Calcium carbonate (CaCO3) is typically found in a solid state, such as in the form of limestone or chalk.
In its pure form, calcium is a silvery, firm element which is rather malleable. From: http://www.wisegeek.com/what-is-calcium.htm
Pure calcium can be found in mineral form in rocks, such as limestone and marble, as well as in bones and teeth of animals. It is also available in dietary sources such as dairy products, leafy green vegetables, and fortified foods.
Calcium is usually found in compounds rather than as a pure element. Common calcium compounds include calcium carbonate (found in limestone and eggshells) and calcium hydroxide (used in cement and as a food additive).
A pure sample of calcium is a silver-white metal that is highly reactive and not typically found in its elemental form in nature. It is commonly found in compound form, such as calcium carbonate in rocks like limestone, or in calcium phosphate in bones and teeth.
Tantalum doesn't exist in pure state in nature.
it was discovered as a solid
Normally found as a solid.
Yes. Calcium oxide is a compound which is a type of pure substance.
Yes. Calcium oxide is a compound which is a type of pure substance.
Calcium carbonate (CaCO3) is typically found in a solid state, such as in the form of limestone or chalk.
Calcium is the metallic component of the substance limestone. Limestone, or calcium carbonate, is an example of a sedimentary rock.
In its pure form, calcium is a silvery, firm element which is rather malleable. From: http://www.wisegeek.com/what-is-calcium.htm
yes