domingo, 20 de marzo de 2011

Vocabulary #1

1.Matter: Any solid liquid or gas.

2.Mass:The measure of how hard is to pull or push 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.Physical property: A property that can be observed without changing the identify of a substance.


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


7.Solution: A mixture of one substancedissolved in another so that the properties are the same thorought.


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

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