1. The constituents of a mixture do not retain their original properties.   True   False   2. Which of the following is a pure substance made up of one type of atoms?   Element   Compound   Mixture   Hint Half-n-half Clue   3. Which of the following is an impure substance made up of two or more types of atoms or elements?   Mixture   Compound   Element   Half-n-half Clue   4. A mixture of water and oil is _______ in nature.   homogeneous   heterogeneous   5. Stainless steel is a mixture (alloy) of _______, _______, chromium, and nickel.   iron, carbon   aluminum, tin   copper, zinc   lead, magnesium   Half-n-half Clue   6. Which of the following is a mixture?   Potassium carbonate solution   Potassium   Potassium carbonate   Half-n-half Clue   7. Which of the following is an element?   Calcium chloride solution   Calcium chloride   Calcium   Half-n-half Clue