domingo, 13 de marzo de 2011


1. Matter: any solid, liquid, or gas.

2.Mass: The amount of matter in an object.

3.Volume: The amount of space an object takes up.

4.Density: The amount of mass in a certain volume of material.

5.Phisical Property: A property that can be observed without changing the identity of the substance.

6. Physical Change: A change in size,shape,or state without forming a new substance.

7.Solution: A mixture of one substance dissolved into another so that the properties are the same throughout.

8.Chemical Change: a change in matter a change in matter that produces a new substance with different properties from the original.