1. The constituents of a mixture do not retain their original properties.   True   False   2. Copper sulfate can be further subdivided into simpler substances by chemical means only. Therefore, it is _______.   a compound   a mixture   an element   Hint Half-n-half Clue   3. Oxygen cannot be further subdivided into simpler substances by any physical or chemical means. Therefore, it is _______.   a mixture   an element   a compound   Half-n-half Clue   4. Which of the following is a pure substance made up of two or more types of atoms or elements?   Element   Compound   Mixture   Half-n-half Clue   5. Copper sulfate solution can be further subdivided into simpler substances by physical (mechanical) means. Therefore, it is _______.   a compound   an element   a mixture   Half-n-half Clue   6. Which of the following is an element?   Calcium chloride solution   Calcium   Calcium chloride   Half-n-half Clue   7. Which of the following is a mixture?   Potassium   Potassium carbonate   Potassium carbonate solution   Half-n-half Clue