Category 1
Category 2
Category 3
Category 4
100

Which is true about all particles of matter?

  1. They are made of molecules.

  2. They are in constant  motion.

  3. They are solid.

  4. They are made of cells.


2. They are in constant motion

100

 When an ice cube melts over time, the particles of the ice cube _________.

  1. Loses kinetic energy

  2. Gains kinetic energy

  3. Loses potential energy

  4. Gains potential energy

2. Gains kinetic energy

100

What happens to the particles of matter when a chemical reaction takes place?



  1. They burn

  2. They become less

  3. They rearrange

  4. They become more



3. rearrange

100

During an exothermic reaction, heat ____________


  1. Is Released

  2. Is Absorbed

  3. Is constant

  4. Is Not needed.

1. is released

200

 Kinetic energy is possessed by objects in/at/on


  1. Rest

  2. Motion

  3. Earth

  4. air

2. In motion

200

When a solid substance melts, it _____ energy.


  1. absorbs/gains

  2. releases/loses

  3. Produces

  4. creates


1. absorbs/gains

200

Which is not an example of a chemical change?


  1. Water evaporates during boiling

  2. Baking of bread

  3. Browning of a sliced apple

  4. Rusting of an iron nail


1. water evaporates when boiling

200

Which shows a sign of an endothermic reaction?


  1. The container where the reaction happens feels cold

  2. The container where the reaction happens feels warm/hot

  3. The container where the reaction happens remains the same

  4. The container where the reaction happens changes into a new substance


number 1

300

The average kinetic energy of particles of a substance is called ___________.


  1. Thermal energy

  2. Heat energy

  3. Temperature

  4. warmth


3. Temperature

300

When a liquid substance freezes, it _____ energy.


  1. absorbs/gains

  2. releases/loses

  3. Produces

  4. creates


2. releases/loses

300

Which is not a physical change?


  1. Peeling of paint on a wall

  2. Statue of liberty turning green

  3. Boiling of water

  4. Crushing chalk into powder


2. statue of liberty turning green

300

Which shows balanced forces?

1. a boy riding his bike

2. a bird flying

3. a book on the chair

4. the wind blowing

3. a book on the chair

400

The total kinetic energy of all the particles of a substance is called.


  1. Thermal energy

  2. Heat energy

  3. Temperature

  4. warmth


1. Thermal energy

400

 When a liquid substance turns into vapor, it ________ energy.


  1. absorbs/gains

  2. releases/loses

  3. Produces

  4. creates


1. absorbs/gains

400

Which are signs of chemical reactions? Choose all that apply.



  1. A new substance is formed

  2. Change in shape

  3. Gas or smoke is produces

  4. Heat is produced

  5. Heat is absorbed

  6. Sound is produced



all except number 2

400

Which shows unbalanced forces

1. a leaf on a branch

2. a cup on a saucer

3. a waterfall

4. a cloud

3. a waterfall

500

When a substance gains thermal energy its kinetic energy _______


  1. Increases

  2. Decreases

  3. Remains the same

  4. Is lost


1. Increases

500

When a chemical reaction happens, ______ is released or absorbed.


  1. Matter

  2. Energy

  3. Light

  4. air


2. energy

500

During an endothermic reaction, heat energy  _______

  1. Is Released

  2. Is Absorbed

  3. Is constant

  4. Is Not needed.

2. Is absorbed

500

What forces causes a team to win over another team in a tug of war game?

1. balanced

2. unbalanced

unbalanced

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