1. With which metal does oxygen combine to form rust?   Gold   Platinum   Silver   Iron   Hint Half-n-half Clue   2. Metals that can be easily drawn into wires are known as _______ metals.   stretchable   ductile   polymer   malleable   Half-n-half Clue   3. Bronze is an alloy of _______.   lead and copper   copper and tin   copper and zinc   barium, zinc and iron   Half-n-half Clue   4. Which of the following metals is often found in the pure state?   Magnesium   Gold   Aluminum   Iron   Half-n-half Clue   5. Rocks that are rich in metals are known as _______.   ores   allotropes   metalloids   slag   Half-n-half Clue   6. Metals are obtained from their oxides by the process of _______.   electrolytic separation   roasting   oxidation   reduction   Half-n-half Clue   7. Metals are usually good conductors of heat and electricity.   True   False