4 Written Questions

1. solids, liquids, and gases.
2. are substances that cannot be broken down in to other substances by any physical or chemical means.
3. can be classified into two general categories: mixture and pure substances.
4. is the temperature at which a substance changes from a liquid to a gas.

4 Multiple Choice Questions

1. is anything that has mass and takes up space.
   1. Compound
   2. Melting point
   3. Matter
   4. Elements
2. for a give substance never changes, they can be used to identify unknown matter.
   1. Chemical changes
   2. Characteristic properties
   3. Chemical activity
   4. Melting point
3. is made of only one kind of matter and has definite properties.
   1. Physical changes
   2. Pure substances
   3. Elements
   4. Chemical changes
4. alter the form of a substance, but not its identity.
   1. Chemical activity
   2. Chemical changes
   3. Pure substances
   4. Physical changes

4 True/False Question

1. Chemical changes → alter the form of a substance, but not its identity.
   

   True        False

2. Compound → is a substance made of two or more elements that are chemically combined.
   

   True        False

3. Melting point → is the temperature at which a solid changes from a solid to a liquid.
   

   True        False

4. Chemical activity → is a characteristic property of a substance that indicates its ability to undergo a specific chemical change.
   

   True        False