Classification of matter

Homogeneous mixture

The mixture particles are small and the mixture looks combined

Heterogeneous mixture

particles are large and easily recognized. The mixture appears as 2 or more different things

Element

Simplest form of matter made of atoms

Compound

2 or more elements chemically combined

Mixture

2 or more elements physically combined

Indications of a chemical change

1. a new solid/liquid/gas is formed

2. heat is produce/removed

3. color change

4. light is produced

Are phase changes physical changes or chemical changes

Physical changes

what is the handy dandy handy word

Distillation

Synthesis

2 or more elements combine to form a compund

Decomposition

a compound breaks down into elements or simpler compounds

Single replacement

an element replaces another element in the compound

double replacement

2 compounds switch places with one another

Law of conservation of matter

All matter and energy cannot be created or destroyed.

why do we balance equations

to follow the law of conservation of matter