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Eighth Grade (Grade 8) Kinetics and Equilibrium Questions

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Grade 8 Kinetics and Equilibrium
The TOTAL energy of all particles in an object is known as                       .
  1. chemical energy
  2. thermal energy
  3. temperature
  4. electromagnetic energy
Grade 8 Kinetics and Equilibrium
The change in state in which a liquid turns into a solid is called                .
  1. freezing
  2. density
  3. dissolving
  4. calibration
  5. melting
Grade 8 Kinetics and Equilibrium
Which of the following scientific concepts do the diagrams best illustrate?
Particle State - GasParticle State - LiquidParticle State - Solid
  1. Big Bang Theory
  2. Kinetic Theory of Matter
  3. Newton's Laws of Motion
  4. Law of Universal Gravitation
Grade 8 Kinetics and Equilibrium
Boyle's law states that as the pressure of a gas increases, its                      .
  1. volume increases
  2. temperature increases
  3. volume decreases
  4. temperature decreases
Grade 8 Kinetics and Equilibrium
The measure of the AVERAGE energy of motion of particles in matter is known as
  1. thermal energy.
  2. electromagnetic energy.
  3. temperature.
  4. electrical energy.
Grade 8 Kinetics and Equilibrium
When adding heat energy to particles in a container, the particles will NOT                                      .
  1. move faster
  2. increase the space between each other
  3. increase their volume
  4. increase their attractive forces
Grade 8 Kinetics and Equilibrium
A small helium tank is capable of filling many balloons because                                                                         .
  1. helium is a liquid
  2. balloons are solid
  3. particles in a helium tank are farther apart than particles in a balloon
  4. the amount of empty space between the particles can change
Grade 8 Kinetics and Equilibrium
The temperature of one glass of water is 100ºC, and the temperature of another glass of water is 0ºC. Both glasses contain the same amount of water. Which of the following is a correct statement about the two glasses of water?
  1. The molecules of the cold water are larger.
  2. The molecules of the warm water are larger.
  3. The molecules of the warm water have more energy.
  4. The molecules of the cold water have more energy.
Grade 8 Kinetics and Equilibrium
When a substance is heated, its particles gain kinetic energy.
  1. True
  2. False
Grade 8 Kinetics and Equilibrium
During which process must thermal energy be removed from a material?
  1. freezing to liquid
  2. condensation to liquid
  3. liquid to vaporization
  4. none of the above
Grade 8 Kinetics and Equilibrium
As a substance changes from a liquid to a gas, the distance between its particles                         .
  1. decreases
  2. increases
  3. stays the same
  4. increases then decreases
Grade 8 Kinetics and Equilibrium
Gases have only a little bit of kinetic energy.
  1. True
  2. False
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