Chemistry: Heat Transfer

Front

Why does food wrapped in aluminum foil keep warm for a long time?

Back

The silver surface of the foil reflects heat in and prevents heat loss by radiation.

Front

A toaster toasting bread is an example of: condensation, conduction, convection, radiation

Back

radiation

Front

Why does the countertop under a can of soda feel colder than the rest?

Back

Some heat has been transferred from the counter to the soda.

Front

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

Back

Hotter to colder

Front

The type of heat transfer that happens through direct contact of molecules or particles with each other is ___________________. Options: Convection, Conduction, Radiation, insulation.

Back

Conduction

Front

The kind of heat transfer that travels through space in electromagnetic waves is ______________________.

Back

Radiation

Front

Type of heat transfer in fluids, such as warm air rising and cold air sinking, creating wind.

Back

Convection

Front

Best example of conduction:

a heat lamp warming a beaker of water

,

water boiling in a pot

,

frying an egg

,

gases circulating in the atmosphere

Back

frying an egg

Front

Warm air rises and cold air sinks demonstrates this type of heat transfer.

Back

convection

Front

Which statement is true?

Back

The quicker a molecule moves, the warmer it is.