What are all substances made from?

• atoms

• cells

Atoms contain three types of subatomic particles. What are they called?

• electrons

• protons

• neutrons

• nucleus

• shells

What charge do electrons have?

• positive charge

• negative charge

• neutral charge

An atom has an equal number of protons and electrons. What is the overall charge of an atom?

• positive charge

• negative charge

• neutral charge

If an atom gains an electron, what charge will the atom have?

• positive charge

• negative charge

• neutral charge

If an atom loses an electron, what charge will the atom have?

• positive charge

• negative charge

• neutral charge

What force results from one material rubbing against another material?

• Friction

• weight

• upthrust

• resistance

If two insulating materials are rubbed together, they become charged. Friction causes electrons to move from one material to the other material. The material that gains electrons becomes __________ charged.

• positively

• negatively

• neutral

If two insulating materials are rubbed together, they become charged. Friction causes electrons to move from one material to the other material. The material that loses electrons becomes __________ charged.

• positively

• negatively

• neutral

The charge that builds up when an insulating material gains or loses electrons is called ______ electricity.

• static

• current