Energy and Matter Concepts

Front

Energy is the ability to do work or cause change.

Back

Energy is a fundamental concept in physics.

Front

Mechanical energy is the sum of an object’s kinetic energy and potential energy.

Back

Mechanical energy is the total energy of an object.

Front

The amount of chemical energy in a molecule depends on the kinds of atoms and their arrangement.

Back

Chemical energy is stored in the bonds of chemical compounds.

Front

The Kinetic Theory of Matter states that all particles that make up matter are constantly in motion.

Back

This theory explains the behavior of solids, liquids, and gases.

Front

The particles in a solid do not move around much.

Back

Solids have a fixed shape and volume.

Front

The particles in a liquid move around more freely.

Back

Liquids have a definite volume but take the shape of their container.

Front

The particles in a gas are far apart and move at high speeds.

Back

Gases have neither a fixed shape nor a fixed volume.

Front

Temperature is the measure of the average kinetic energy of all the particles in an object.

Back

Higher temperatures indicate higher kinetic energy.

Front

The Sun is the Earth’s main source of energy.

Back

Solar energy is essential for life on Earth.

Front

A renewable resource is an energy source that can be easily reproduced or replaced by nature.

Back

Examples include solar, wind, and hydro energy.