1. Sodium is very reactive and may burn on exposure to air, hence it is kept under   Ice   Oil   Water   Acids   Hint Half-n-half Clue   2. If a metal ore is titled "pyrites" then it most probably has   Sulphur   Oxygen   Nitrogen   Chlorine   Half-n-half Clue   3. Fill in the missing word _______ + Oxygen = Magnesium Oxide   Metal   Carbon   Manganese   Magnesium   Half-n-half Clue   4. Metals are usually good conductors of heat and electricity.   True   False   5. Which metal is extracted from Haematite?   Cadmium   Tin   Iron   Manganese   Half-n-half Clue   6. With which metal does oxygen combine to form rust?   Gold   Iron   Platinum   Silver   Half-n-half Clue   7. What are metals that can be beaten into various shapes called?   Ductile Metals   Beatable Metals   Malleable Metals   Polymer Metals   Half-n-half Clue