Matter can be broken down into two categories: pure substances<span> and </span>mixtures.Pure substances<span> are further broken down into elements and compounds. ... A chemical </span>substance<span> is composed of one type of atom or molecule. A </span>mixture<span> is composed of different types of atoms or molecules that are not chemically bonded</span>
Milk, Blood, Coffee, Water, Urine, Gasoline, Wine
Answer:
Calcium is a chemical element with the symbol Ca and atomic number 20.
Explanation:
