| |
Mixture |
Compound |
| Composition |
Variable
composition – you can vary the amount of each substance in a mixture. |
Definite
composition – you cannot vary the amount of each element in a compound. |
| Joined or not |
The different
substances are not chemically joined together. |
The different
elements are chemically joined together. |
| Properties |
Each substance
in the mixture keeps its own properties. |
The compound
has properties different from the elements it contains. |
| Separation |
Each substance
is easily separated from the mixture. |
It can only be
separated into its elements using chemical reactions. |
| Examples |
Air, sea water,
most rocks. |
Water, carbon
dioxide, magnesium oxide, sodium chloride. |