Chemical Interactions: Investigation 5

Front

What happens when two objects at different temperatures are placed in contact with each other?

Back

Energy is transferred from the hotter object to the cooler object until they reach thermal equilibrium.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is thermal energy transfer?

Back

Thermal energy transfer is the process of energy moving from a warmer object to a cooler object, typically through conduction, convection, or radiation.

Front

What is the formula to calculate temperature change?

Back

Temperature change (ΔT) = Final temperature - Initial temperature.

Front

What happens to the speed of a slower particle when it collides with a faster particle?

Back

The speed of the slower particle increases after the collision.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state reached when two objects in contact no longer transfer heat to each other, meaning they are at the same temperature.

Front

What is the relationship between speed and kinetic energy?

Back

Kinetic energy increases with the square of the speed; if speed doubles, kinetic energy increases by a factor of four.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where faster-moving particles transfer energy to slower-moving particles.

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

What is radiation?

Back

Radiation is the transfer of energy through electromagnetic waves, which can occur in a vacuum, such as heat from the sun.