| A | B |
|---|
| observation | fact learned through senses |
| inference | a logical interpretation |
| a property of a substance | a trait or characteristic |
| mass | amount of matter |
| volume | amount of space something takes up |
| mass measured in | grams |
| volume measured in | cc's |
| solid properties | definite shape and volume |
| liquid properties | no definite shape, but definite volume |
| gas properties | no definite shape or volume |
| why do solids support themselves | have strong links to hold particles up |
| why do liquids no support themselves | links not strong enough |
| why do gases spread out | very weak links |
| as compactness increases, density | increases |
| density of water | 1.0 g/cc |
| physical property | can be observed without a chemical change |
| chemical property | can only be observed with a chemical change |
| physical changes | tearing, crushing, melting, freezing, boiling |
| pure substance | material that contains only one type of matter |
| mixture | contain more than one material |
| heterogeneous mixture | not evenly mixed (salad) |
| homogeneous mixture | evenly mixed (paint) |
