1. UNIT TWO- MIXTURES AND PURE SUBSTANCES

2. To start the unit we will be making a definitions page. With the definition I would like you to leave some room for you to make some sketches as well.

3. DEFINITIONS 1. Heterogeneous A mixture, made up of parts that retain their own properties, even if these properties are not visible to the unaided eye. 2. Homogeneous A material having only one set of properties.

4. 3. Matter Anything that takes up space, has mass, and is made up of particles. 4. Mixture A material made up of at least two different p ure substances.

5. 5. Pure Substance A material that is composed of only one type of particle; example: gold, oxygen and water. 6. Solution A mixture in which the distinct properties of the different substances are combined into one set of properties.

6. 7. Solute A substance that can be dissolved in a solvent; for example, salt is a solute that dissolves in water. 8. Solvent A substance into which a solute may be dissolved; for example, water is a solvent that dissolves sugar.

7. PURE SUBSTANCES AND MIXTURES Make a Title page for your databook In groups of 3-4, try to pick out the words that are going to be included in next unit Start a definitions page and make sketches to go along with the definitions Start the weekly learning log