1. The constituents of a mixture do not retain their original properties.   True   False   2. Which of the following is an impure substance made up of two or more types of atoms or elements?   Compound   Element   Mixture   Hint Half-n-half Clue   3. A mixture of water and oil is _______ in nature.   heterogeneous   homogeneous   4. Stainless steel is a mixture (alloy) of _______, _______, chromium, and nickel.   iron, carbon   copper, zinc   lead, magnesium   aluminum, tin   Half-n-half Clue   5. H2O and FeS represent _______.   mixtures   compounds   elements   Half-n-half Clue   6. Which of the following is the smallest part of a compound, whose properties are the same as those of the compound?   Element   Atom   Molecule   Mixture   Half-n-half Clue   7. Which of the following is a compound?   Sodium sulfide   Sodium sulfide solution   Sodium   Half-n-half Clue