•CaCO3
Includes;Calcium,Carbon and Oxygen
•CaCl2 consists of; Calcium and Chlorine
•CHO consists of; Carbon,Hydrogen and Oxygen
•HCl consists of; Hydrogen and Chlorine
•Ca(OH)2 consists of; Calcium,Oxygen and Hydrogen
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Barium is a chemical element with symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element. Thanks and I hope it helped.
Answer:
A physical property is a characteristic of matter that is not associated with a change in its chemical composition.Examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity. We can observe some physical properties, such as density and color, without changing the physical state of the matter observed.