Calcium IS itself an element so there is no constituent element.
Calcium sulfate (CaSO4) is a compound.
Calcium is an element, so calcium makes up calcium.
Calcium IS an element, whole and complete.
Calcium is an element.
Calcium is an element. (Ca on the periodic table).
Calcium is a metal element.
Calcium hydroxide is not en element it is a compound.
Bones contain the element Calcium (Ca). It is not this element but compounds made out of this element that gives bones their strength. These compounds are calcium phosphate and calcium carbonate.
Calcium is itself an element. Elements do not contain other substances.
This chemical element is calcium (Ca).
Calcium is an element. There are things such as elements and compounds. Calcium is a single element. Calcium containing compounds exist also but compounds contain more than one element.