1. Copper sulfate can be further subdivided into simpler substances by chemical means only. Therefore, it is _______.   an element   a mixture   a compound   Hint Half-n-half Clue   2. H2 and Fe represent _______.   mixtures   elements   compounds   Half-n-half Clue   3. A mixture of water and oil is _______ in nature.   homogeneous   heterogeneous   4. H2O and FeS represent _______.   elements   compounds   mixtures   Half-n-half Clue   5. Which of the following is a pure substance made up of two or more types of atoms or elements?   Mixture   Element   Compound   Half-n-half Clue   6. Potassium sulfide solution is a _______ mixture.   heterogeneous   homogeneous   7. Copper sulfate solution can be further subdivided into simpler substances by physical (mechanical) means. Therefore, it is _______.   an element   a compound   a mixture   Half-n-half Clue