MCAT Content / Energy Changes In Chemical Reactions / Heat Transfer Conduction Convection Radiation

Heat Transfer: Conduction, convection, radiation

Topic: Energy Changes In Chemical Reactions

Three types of heat transfer that can occur in a system are conduction, convection, and radiation.

Conduction involves the direct transfer of heat through a substance without much the substance. In order for conduction to happen, there must be direct contact. An example of this is a spoon gradually becoming hotter in a cup of coffee.

Convection involves the transfer of heat through a flowing current. An example of this is water gradually becoming hotter through in a pot over an open flame.

Radiation involves the transfer of heat by electromagnetic radiation. An example of this is using a microwave to reheat food.

Practice Questions

 Khan Academy 

What conditions influence lyophilisation?

MCAT Official Prep (AAMC)

Practice Exam 4 C/P Section Passage 3 Question 16


Key Points

• Heat can be transferred via physical touch (conduction), physical flowing current (convection), or electromagnetic waves (radiation).

• Heat can be lost from items via conduction, convection and radiation.

Key Terms

Conduction: movement of heat by direct contact

Convection: movement of heat in liquids and gases as a movement of particles

Radiation: where heat is transferred by electromagnetic radiation and does not require matter

Billing Information
We had trouble validating your card. It's possible your card provider is preventing us from charging the card. Please contact your card provider or customer support.
{{ cardForm.errors.get('number') }}
{{ registerForm.errors.get('zip') }}
{{ registerForm.errors.get('coupon') }}
Tax: {{ taxAmount(selectedPlan) | currency spark.currencySymbol }}

Total Price Including Tax: {{ priceWithTax(selectedPlan) | currency spark.currencySymbol }} / {{ selectedPlan.interval | capitalize }}