Heat & TemperatureNOT the same thing

Heat (Thermal Energy) is produced from the movement of the particles in a substance.

Thermal energy depends on 2 factors:-# of particles-how fast they move (temperature)

SolidsHave a lower thermal energy b/c their particles don’t move very much

GasesHave a higher

thermal energy b/c their particles move

a lot

The effect of # of particles on Thermal Energy/Heat

Which will have more thermal energy?a) Many slow moving particles b) Few slow moving particles

Answer: ASince they’re both slow moving,

more slow moving particles will have more thermal energy (heat) than

fewer particles would.

Temperature tells you how fast the particles are moving.

At higher temperatures, particles are moving fast

Particles move slower at lower temperatures

So, Temperature is a measure of heat. Units (°C)

solid gasliquid

The effect of temperature on Thermal Energy/Heat

What will have more thermal energy/heat?

a) Particles at 15°Cb) Particles at 65°C

Answer: BSince particles move faster at higher

temperatures, the particles at 65° will have more thermal energy (heat).

Heat can be transferred from one area to another

The transfer happens from a warm area to a colder area

Does an ice cube cool

your drink or

does the drink warm

the ice cube?