Homework:
Thursday's homework was to read the following definitions from your lab packet.  If you did not do that, then please do it over the weekend. 

Key words:

• Properties are characteristics of each substance, and we can use the properties of each substance to distinguish (tell the difference), between substances. Properties may be physical or chemical:
• Physical properties are characteristics that do not change whether the amount is very large or very small, such as color, hardness, state of matter (solid, liquid or gas), density, flexibility, conductivity.
• Chemical properties are the specific result of a test with another chemical. Chemical properties include flammability, unique color change in a chemical reaction, pH (is a substance acid, neutral or base?), reactivity with acid, or production of  a salt when an acid reacts with a base.

For Monday, copy into your science notebook the definitions for Properties, Physical Properties, Chemical Properties, Heterogeneous, and Homogeneous:
Vocab: (write vocab words in notes, words + definitions in vocab section)

• heterogeneous - a mixture in which you can see the different substances that make up the mixture.
• homogeneous - a mixture where you can not see that it is made up of different substances; all parts of the mixture look the same.
• variable - anything that can affect the outcome of an experiment.
• Independent variable - the part of the experiment that you change, or manipulate.

• dependent variable - the result; what you measure at the end of the experiment.