5 Written Questions

1. change in state from a liquid to a gas throughout the liquid
2. the basic particle of an element.
3. is two or more substances that are together in the same place but are not chemically combined.
4. The different parts can be seen.
5. a pure substance that cannot be broken down into any other substance by chemical or physical means.

5 Matching Questions

1. Physical property
2. Density
3. Gas
4. matter
5. Law of conservation of mass

1. a a kind of matter that easily changes volume and shape.
2. b a measurement that relates the volume and mass of an object
3. c anything that has mass and takes up space
4. d can be observed without changing a substance into another substance
5. e states that matter is not created or destroyed in any chemical or physical reaction.

5 Multiple Choice Questions

1. a change of energy that releases or gives off energy
   1. Endothermic change
   2. Thermal energy
   3. Exothermic change
   4. Freezing
2. a change in which energy is taken in, or absorbed
   1. Endothermic change
   2. Exothermic change
   3. Thermal energy
   4. Molecule
3. The substances are so evenly mixed that the different parts cannot be seen.
   1. Condensation
   2. Homogeneous mixture
   3. Heterogeneous mixture
   4. Mixture
4. describes the ability of a substance to change into a different substance
   1. Chemical formula
   2. Chemical property
   3. Physical property
   4. Thermal energy
5. a particle formed when two or more atoms are held together by chemical bonds.
   1. Mixture
   2. Molecule
   3. Volume
   4. Solid

5 True/False Question

1. Chemical formula → describes the ability of a substance to change into a different substance
   

   True        False

2. Weight → a measure of the force of gravity on an object
   

   True        False

3. evaporation → the change in state from liquid to gas
   

   True        False

4. Melting point → the temperature at which a substance changes state from a solid to a liquid
   

   True        False

5. Freezing point → is the specific temperature a substances changes states from a liquid to a solid
   

   True        False