Statistics for Science - Elements and Metals

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Hint	Answer	% Correct
Diamond is an allotropic form of	carbon	90%
Inert gas which is substituted for nitrogen in the air used by deep sea divers for breating	helium	78%
Galvanized iron sheets have a coating of...	zinc	73%
Soda water contains this gas	carbon dioxide	62%
What is laughing gas?	nitrous oxide	60%
Gas usually filled in the electric bulb is	nitrogen	58%
What is the lightest metal?	lithium	49%
The most important ore of aluminum is	bauxite	41%
Marsh gas is	methane	35%
In fireworks the green flame is produced by	barium	12%
Permanent hardness in water may be removed by the addition of	sodium carbonate	5%