2425 IA2 Practice Test

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion. It depends on the mass and speed of the object.

Front

What happens to kinetic energy when molecules slow down?

Back

The kinetic energy of the molecules decreases.

Front

What is constant speed?

Back

Constant speed means that an object covers equal distances in equal intervals of time, without changing its speed.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials, where heat moves from the hotter object to the cooler one.

Front

Give an example of conduction.

Back

Putting a metal spoon in a mug of hot water is an example of conduction.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It can be positive (speeding up) or negative (slowing down).

Front

What does a graph showing acceleration look like?

Back

A graph showing acceleration typically has a curve that indicates a change in speed over time.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

Give an example of a chemical reaction.

Back

Forming a solid from two liquids is an example of a chemical reaction.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not alter the chemical composition of a substance, while chemical changes do.