Mixtures
#science #chemistry A pure substance contains only one type of particle, such as 24k gold. Whilst a mixture contains 2 or more different particle types. In metals these are called alloys.
In order for a substance to be a mixture it must have these properties:
- Can be separated with physical methods (See this 📂)
- Can only have the properties of substances in the mixture
- Separation is a physical change, so no chemical changes should occur.
An example of a mixture can be our air, made out of approximately 78% nitrogen, 21% oxygen and >1% carbon dioxide.
Mixture or Compound?
| Mixture | Compound |
|---|---|
| Is not chemically bonded | Chemically bonded |
| Can be separated with simple separation techniques. | Can only be separated with chemical reactions. |
| May not have equal amounts of substances. | Will have equal amounts of substances. |
