Quiz on Atoms and Molecules

What is the smallest part of any material called?

• Atom

• Molecule

• Proton

• Electron

What charge do electrons have?

• Positive

• Neutral

• Negative

• No charge

Which part of the atom is positively charged?

• Electron

• Neutron

• Proton

• Shell

What is the atomic number of copper?

• 28

• 29

• 30

• 31

What is the flow of electrons in a conductor called?

• Electric charge

• Electric current

• Electric potential

• Electric field

What device in the diagram measures the current?

• Battery

• Lamp

• Ammeter

• Switch

In which direction does the current flow in the diagram?

• From lamp to battery

• From battery to switch

• From switch to ammeter

• From ammeter to lamp

What happens to the current when the switch is open?

• It increases

• It decreases

• It stops

• It reverses

Which material is an insulator?

• Copper

• Mercury

• Diamond

• Sea water

Which of these is an insulator?

• Platinum

• Mercury

• Asphalt

• Sea water