1. Classification of Matter
Mixtures
A combination of 2 or more substances that are not chemically combined
Do not react with each other
Each substance keeps its own properties

2. Classification of Matter
Mixtures, con.’t
Solutions
Mixture that appears to be a single substance but is composed of particles of 2 or more substances that are distributed evenly amongst each other
Homogeneous mixture-same appearance & properties throughout the mixture
Particles are so small that they never settle out nor can they be filtered out

3. Classification of Matter
Mixtures, con.’t
Suspensions
A mixture in which particles of a material are dispersed throughout a liquid or gas but are large enough that they settle out
Heterogeneous mixture- different components can be easily seen
Can be separated by passing through a filter
Particles scatter or block light
Example-snow globe, blood, Italian salad dressing

4. Classification of Matter
Mixtures, con.’t
Colloids
A mixture in which the particles are dispersed throughout but are not heavy enough to settle out
Particles scatter light
Cannot be separated by filtration
Examples-whipped cream, fog, milk, mayonnaise