1. An alloy is _______.   a solid solution of two or more metals   a compound of three elements   an element in the impure form   a mixture of three elements   Hint Half-n-half Clue   2. To prevent corrosion, metals are often galvanized by covering them with a layer of _______.   copper   zinc   tin   sodium   Half-n-half Clue   3. Metals that can be easily beaten into sheets are known as _______ metals.   beatable   ductile   polymer   malleable   Half-n-half Clue   4. Which metal is extracted from the ore 'hematite'?   Iron   Manganese   Aluminum   Tin   Half-n-half Clue   5. If a metal's ore is titled 'pyrites', then it most probably contains _______.   chlorine   oxygen   sulfur   nitrogen   Half-n-half Clue   6. With which metal does oxygen combine to form rust?   Platinum   Iron   Silver   Gold   Half-n-half Clue   7. Which of the following does not belong to this group?   Oxygen   Sodium   Iron   Lead   Half-n-half Clue