1. Notes on Compounds and mixtures
Examples: Water H2O
Sugar C6H12O6
Salt NaCl
Carbon Dioxide CO2
Characteristics: The properties of compounds are very different from the properties of the elements that combine to form them. It requires a chemical change to separated the elements.

2. Mixtures: Examples: air, muddy water, sugar water, sand
Characteristics: Its components can be separated by physical means. It is made up of two or more compounds. Its components keep their own properties.

3. Compound or Mixture? Water Air Muddy water Ice Sugar water Sand
Sugar salt
Salt water
Carbon dioxide continue on next slide

4. Compound or Mixture? Its components can be separated by physical means
It has properties that differ from those of its separate elements
It can be formed by atoms sharing electrons
It can be formed by negative and positive ions joining
It is made up of two or more compounds
Its components keep their own properties
It requires a chemical change to be separated.

5. Types of Mixtures
Solution – a mixture of two or more substances that is homogeneous at the molecular level; a solution consists of a solute and a solvent.
Homogeneous – a mixture in which every sample of it has the same composition
Heterogeneous – a mixture in which every sample of it might have a different composition.