jr science 6.1

Which particles have a positive charge?

• Protons
• Neutrons
• Electrons
• Atoms

What is the charge of a proton?

• Neutral
• Negative
• Positive
• Zero

What is electric charge?

• A measure of how fast an object moves.
• A force that only affects metals.
• A type of energy that can be seen.
• A property of a particle that affects how it behaves around other particles.

What happens when two objects with like charges come close to each other?

• They attract each other.
• They repel each other.
• They become neutral.
• They create static electricity.

What can be inferred about an atom that has an equal number of protons and electrons?

• It has no charge.
• It has a negative charge.
• It is unstable.
• It has a positive charge.

If you rub a balloon on your hair, what happens?

• The balloon becomes neutral.
• Your hair loses all its charge.
• The balloon becomes positively charged.
• The balloon becomes negatively charged.

What is the effect of touching a metal doorknob after walking on a carpet?

• You will feel nothing.
• The doorknob will become charged.
• You will feel a shock due to static electricity.
• The carpet will become charged.

What happens to an atom that loses an electron?

• It becomes positively charged.
• It stays neutral.
• It gains a neutron.
• It becomes negatively charged.

If an atom gains an electron, what charge does it have?

• Positive
• Zero
• Neutral
• Negative

What happens to like charges when they come close to each other?

• They repel each other.
• They create static electricity.
• They become neutral.
• They attract each other.