heat vs temperature

Which quantity tells us how hot or cold something is?

• Heat

• Temperature

• Mass

• Density

How do molecules at warm temperatures differ from molecules at cool temperatures?

• At warm temperatures, molecules move around more.

• At warm temperatures, molecules grow in size.

• At warm temperatures, molecules exchange electrons more easily.

• At warm temperatures, molecules combine with each other more easily.

Heat and temperature are often confused.

Temperature measures the (a)   kinetic energy of particles.

Heat is the (b)   amount of kinetic energy in all the particles.

Heat is measured in (c)   .

Temperature is measured in degrees (d)   .

• average
• total
• joules
• Celsius

A swimming pool and a cup of tea are both at 85°C. Which contains more heat?

• The cup of tea

• The swimming pool

• Both the same

• Cannot tell

Match the quantity to the description:

• Joule

• Unit of heat

• Celsius

• Unit of temperature

• Heat

• Total kinetic energy

• Temperature

• Average kinetic energy

Put these events in the correct order when a substance is heated.

• Particles move faster

• Heat is transferred into the substance

• Temperature increases

• Particles gain kinetic energy

Two beakers contain equally hot water as shown in the figure Which beaker has the higher temperature?

• 80 g

• 160 g

• Both the same

Two beakers contain equally hot water as shown in the figure.

Which beaker contains the most heat?

• 80 g

• 160 g

• Both the same

Both beakers contain water. Which beaker has the higher temperature?

• 80 g

• 160 g

• Both the same

Both beakers contain water. Which beaker contains more heat?

• 80 g

• 160 g

• Both the same