Unit 3 test: Thermochemistry Honors Form B

Front

What is the formula for kinetic energy?

Back

Kinetic energy (KE) is given by the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

How does mass affect kinetic energy when speed is constant?

Back

When speed is constant, an increase in mass results in an increase in kinetic energy.

Front

What is the SI unit of energy?

Back

The SI unit of energy is the joule (J).

Front

Define an exothermic reaction.

Back

An exothermic reaction is a chemical reaction that releases energy in the form of heat.

Front

Define an endothermic reaction.

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings.

Front

What is specific heat capacity?

Back

Specific heat capacity is the amount of heat required to raise the temperature of 1 gram of a substance by 1°C.

Front

How do you calculate the heat absorbed or released by a substance?

Back

The heat (q) absorbed or released can be calculated using the formula q = mcΔT, where m is mass, c is specific heat, and ΔT is the change in temperature.

Front

What is the specific heat of water?

Back

The specific heat of water is 1.00 cal/g°C.

Front

What happens to temperature during an endothermic process?

Back

In an endothermic process, the temperature of the surroundings decreases as the system absorbs heat.

Front

What happens to temperature during an exothermic process?

Back

In an exothermic process, the temperature of the surroundings increases as the system releases heat.