Amplify Thermal Energy Chapter 2 Review

Front

What is the process to find the average of a set of numbers?

Back

Add all the numbers together and then divide by the number of items.

Front

What happens to the speed of molecules in hot water compared to cold water?

Back

Molecules in hot water move faster than those in cold water.

Front

What occurs when the molecules in a sample speed up?

Back

The temperature of the sample increases.

Front

What is a system where the temperature will not change when samples come into contact?

Back

A system where thermal equilibrium is reached.

Front

Which temperature is the warmest: 10℃, 25℃, 70℃, or 75℃?

Back

75℃ is the warmest.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of the particles in a substance.

Front

How does temperature relate to the speed of molecules?

Back

Higher temperature means faster-moving molecules.

Front

What is thermal equilibrium?

Back

Thermal equilibrium is the state in which two objects in contact do not exchange heat.

Front

What is the unit of temperature commonly used in science?

Back

Celsius (℃) is commonly used in science.

Front

What happens to the thermal energy of a substance when it is heated?

Back

The thermal energy increases.