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5 Written Questions

1. A measure of how much matter is in an object.
2. A substance made of only one kind of matter and having definite properties.
3. Two or more substances that are mixed together but not chemically combined.
4. temperature at which a substance changes from a solid to a liquid.
5. A measure of the force of gravity on an object.

5 Matching Questions

1. Volume
2. Electrolysis
3. Physical change
4. Chemical change
5. Ore

1. a A rock that contains a metal or other economically useful element.
2. b The amount of space that matter occupies.
3. c A change in which one or more substances combine or break apart to form new substances.
4. d A process by which an electric current breaks chemical bonds.
5. e A change in a substance that does not change its identity: for example, a change of state.

5 Multiple Choice Questions

1. The force that holds two atoms together.
   1. Chemical activity
   2. Chemical bond
   3. Chemical change
   4. Physical change
2. The smallest particle of an element.
   1. Mass
   2. Volume
   3. Atom
   4. Ore
3. The system of units used by scientists to measure the properties of matter.
   1. International system of units (SI)
   2. Electrolysis
   3. Chemical activity
   4. Melting point
4. A substance made of two or more elements chemically combined.
   1. Molecule
   2. Compound
   3. Mixture
   4. Volume
5. The measurement of how much mass of a substance is contained in a given volume.
   1. Element
   2. Weight
   3. Density
   4. Mass

5 True/False Question

1. Boiling point → The temperature at which a substance changes from a liquid to a gas.
   

   True        False

2. Molecule → The amount of space that matter occupies.
   

   True        False

3. Electrode → A metal strip used in electrolysis.
   

   True        False

4. Element → A substance that cannot be broken down into other substances by chemical or physical means.
   

   True        False

5. Characteristic property → A quality of a substance that never changes and can be used to identify the substance.
   

   True        False