Chemistry quiz

Sterling Silver is pure Silver?

• True

• False

Answer explanation

False. It contains up to 7.5% Copper.

Which is the only metal that is liquid at room temperature?

Answer explanation

Mercury

What percentage of human brain is water?

• 28%

• 78%

Answer explanation

78%

What is the hardest material in the human body?

• Bones in the legs and arm

• Tooth enamel

Which is denser?

• Water

• Ice

Answer explanation

That is why ice floats.

The Eiffel tower is taller in summer than it is in winter.

• True

• False

Answer explanation

Metals expand as they are heated, and this can cause metal structures to stretch with temperature changes.

Chemistry comes from the French word "Chemise".

• True

• False

Answer explanation

The word “Chemistry” comes from “Alchemy”. “Chemise” means shirt in French.

What is the chemical name of water?

Answer explanation

Dihydrogen monoxide.

Our bodies need Iron! Where in the body is most of the iron found?

• Brain

• Blood

The opposite of an explosion is:

Answer explanation

An implosion