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1 A mixture with visible components
2 Something found in nature that has specific properties to help distinguish it from other things
3 A mixture with invisible components
4 A change of state is an example of this type of change
5 Combustion and oxidation are examples of this type of change
6 The relationship between mass and volume of an object, measured in g/cm3 or kg/m3
7 Combination of 2 or more substances
8 The amount of space that an object occupies, measured in cubic centimeters or cubic meters
9 The state of matter of water at room temperature
10 The state of matter of a table
11 The amount of matter in an object, measured in grams or kilograms
12 The state of matter of the air we breathe
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