Energy, Simple Machines, Matter

Front

What happens to molecules in a liquid when it changes to a gas?

Back

Molecules move around each other, then away from each other.

Front

How many states of matter are there?

Back

There are 4 states of matter.

Front

What type of energy do batteries for a watch store?

Back

Batteries store chemical energy.

Front

What does a machine help us do with effort?

Back

A machine helps us do work with less effort.

Front

What is a group of atoms joined together called?

Back

A molecule.

Front

What is the definition of matter?

Back

Matter is anything that has mass and takes up space.

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Front

What is an example of a simple machine?

Back

A lever is an example of a simple machine.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion.