Gr 7 heat practice

How many main ideas are there in the Particle Theory of Matter?

• 3

• 4

• 5

• 6

The transfer of energy from warmer matter to cooler matter is called ?

• heat

• kinetic energy

• temperature

• weather

The energy a moving object has due to its motion is called ?

• heat

• kinetic energy

• temperature

• weather

Temperature is ?

•  a measure of the average kinetic energy of particles

• a measure of the average amount of particles in a given space

• a measure of the average density of particles in a given space

• a measure of the amount of heat contained within an object

The average kinetic energy of the particles of a hot object is _____ the average kinetic energy of the particles of a cold object.

• Higher than

• the same as

• Lower than

• irrelevant to

Which of the following is a main idea of the Particle Theory of Matter?

• Particles in matter are stationary and do not move at all.

• Particles do not interact or attract each other in any way.

• Higher temperatures cause particles to shrink in size rather than move faster.

• Particles of matter attract each other.

Which of the following is a main idea of the Particle Theory of Matter?

• There is empty space between the particles. The state of matter depend son the amount of space between particles and the speed of their motion.

• All particles in matter are identical in size, shape, and mass.

• Particles in matter move faster at lower temperatures and slower at higher temperatures.

• Particles in a gas state have stronger attractions between them compared to particles in a solid state.

When a gas in a container is heated, the overall kinetic energy of the gas particles increases. The particles of the warmer gas hit the walls of the container more often and with greater force. If the walls of the container are flexible, as in a balloon, the more frequent and faster collisions may cause the walls of the container to expand. What is this an example of?

• Temperature

• Thermal Contraction

• Thermal Expansion

• Pressure

Which of the following is a main idea of the Particle Theory of Matter?

• All matter is made up of tiny particles.

• Particles in matter do not have any space between them; they are packed tightly together without gaps.

• All particles within the same substance move at the exact same speed, regardless of temperature or state.

• Particles in a solid state have more energy compared to particles in a liquid or gas state.

Which of the following is a main idea of the Particle Theory of Matter?

• Particles in a solid state have more energy compared to particles in a liquid or gas state.

• The particles of matter are constantly moving. They have kinetic energy, a form of energy that all moving objects possess.

• Particles in a gas state are always heavier than particles in a solid state.

• Particles in matter do not vibrate or experience any movement when at rest.