Elements, Compounds and Mixtures

Question 1

Properties of a compound

Answer 1

1. 2 or more elements
   chemically combined
   in a fixed ratio.
2. Can be broken down
   into simpler substances
   by chemical methods.
3. Different properties from the elements that make it up.

Question 2

Properties of a mixture

Answer 2

1. Can be combined in
   any ratio.
2. Can be separated by
   physical methods.
3. Similar properties to
   the substances that
   make it up

Question 3

Differences between single compound and mixture

Answer 3

Single compound has a fixed composition by mass while mixtures have a variable composition by mass.

Single compound have fixed MP and BP while mixtures have variable MP and BP.

Single compound have unique physical and chemical properties while mixtures have the same properties as its components.

Single compound cannot be easily separated by physical means while mixtures can be easily separated by physical means.