Vocabulary
Modes of Heat Transfer
Particle Theory
States of Matter
States of Matter 2
100

What is heat? 

Mode of motion, transfer of energy from warmer objects to colder objects

100

The heat lamp is an example of what mode of heat transfer?

radiation

100

What happens to particles when materials warm up? 

The particles move faster and spread further apart. 

100

What is this state?

solid

100

What is this state?

Liquid

200

What is kinetic energy? 

Energy that all particles have. Energy of the movement of the particles. 

200

In what states of matter would we find convection currents? 

liquids and gases (fluids) 

200

The force of attraction is greatest between particles of a...

solid 

200

What is this state? 

Gas

200

What is the particle arrangement of a liquid?

Small groups of particles clumped together. Some space between groups of particles. 

300

What is temperature? 

The measure of the average kinetic energy of the particles of a substance. 

300
While curling my hair with a hot curling iron, I accidentally burnt my ear when the curling iron touched it. What form of heat transfer occurred? 

Conduction 

300

Which of physical states of water contain particles with the highest amount of movement? 

Water vapour

300

When scientific term is used when a gas turns back into a liquid? 

Condensation 

300

What scientific term do we use when a liquid turns into a gas? 

Evaporation 

400

What is thermal energy? 

The total kinetic energy and energy of attraction of all the particles in the material. 

400

Steam coming off of a cup of tea is what mode of heat transfer?

Convection 

400

You pound a nail and find that it is hot to the touch afterwards. What is happening to the particles? 

The particles in the nail have more kinetic energy after pounding. 

400
I poured orange juice into moulds to make popsicles and put them in the freezer. When I was eating my popsicle, I left my popsicle out on a plate and now I have a puddle of orange juice. What scientific terms would be used for the changes of state occuring? 

The orange juice turning into popsicles would be freezing. The popsicle turning back into orange juice would be melting. 

400

What is the particle attraction of a gas, liquid and solid? 

Solid has strong particle attraction. 

Liquid has medium particle attraction. 

Gas has weak particle attraction. 

500

What is thermal expansion and thermal contraction? 

Thermal expansion is an increase in the volume of a substance caused by heating. Thermal contraction is a decrease in the volume of a substance caused by cooling. 

500

Define conduction, convection, and radiation. 

Conduction - Heat is moved through a warmer object that is touching a colder object. 

Convection - Heat is circulated through fluids such as air (gas) or water (liquid).

Radiation - Heat is moved or transferred between two objects that are not touching. Energy from the source moves outward in a wave. 

500

What happens when a faster particle bumps into a slower particle? 

The faster particle will transfer its energy to the colder particle and slow down. The slower particle will warm up from the heat of the faster particle and speed up. 

500

What is the particle motion of a solid compared to a gas? 

The particles of a solid vibrate and do not move around. The particles of a gas freely move and roll past each other. 

500

What is the kinetic energy of a gas, liquid and solid? 

Gas has high kinetic energy. 

Liquid has medium kinetic energy. 

Solid has low kinetic energy. 

M
e
n
u