1. 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   2. Which of the following is the smallest part of a compound, whose properties are the same as those of the compound?   Mixture   Atom   Element   Molecule   Half-n-half Clue   3. Which of the following is a pure substance made up of one type of atoms?   Element   Mixture   Compound   Half-n-half Clue   4. Potassium sulfide solution is a _______ mixture.   homogeneous   heterogeneous   5. Which of the following is an element?   Calcium chloride solution   Calcium chloride   Calcium   Half-n-half Clue   6. Copper sulfate solution can be further subdivided into simpler substances by physical (mechanical) means. Therefore, it is _______.   a compound   a mixture   an element   Half-n-half Clue   7. H2 and Fe represent _______.   mixtures   elements   compounds   Half-n-half Clue