PS Test 4 (8th) 21-22

Energy is

• the ability to do work or cause change

• anything that has mass and occupies space

• something that does not exist

Every chemical or physical change in matter

• does not include a change in energy

• does include a change in energy

• none of the above

Matter and Energy

• does not depend on each other

• cannot exist without the other

• none of the above

Unlike matter, energy has different forms which makes it more versatile

• True

• False

MATTER and ENERGY

• cannot be created or destroyed, they can only be transformed.

• can be created with enough technology

• none of the above

Chemical Energy is

• the energy stored in the chemical bonds between atoms.

• the energy that travels through space as waves.

• none of the above

When a chemical change occurs

• chemical bonds are broken and new are formed

• chemical bonds are broken

• nothing happens

Visible light, x-rays, radio waves, microwaves are examples of

• Electromagnetic energy

• Electrical energy

• Mechanical energy

Explain why light is emitted when wood is burnt

Electromagnetic Energy is

• a form of energy that travels through space as waves.

• the energy of electrons moving from one place to another.

• none of the above