Unit 1 External Paper Quiz

How many marks is the chemistry section in the external paper for Unit 1 worth?

• 20 marks

• 25 marks

• 30 marks

• 35 marks

What are all substances made of?

• Molecules

• Atoms

• Cells

• Compounds

What are all substances made up of?

• Plastic

• atoms

• compounds

What particles are found in the nucleus of an atom?

• Electrons and protons

• Protons and neutrons

• Neutrons and electrons

• Electrons only

What particles orbit in shells around the nucleus of an atom?

• Protons

• Neutrons

• Electrons

• Protons and neutrons

What is the size of the nucleus compared to the overall size of the atom?

• Very large

• Very small

• The same size

• Slightly larger

Why is most of the atom considered to be empty space?

• Because the nucleus is very large

• Because the electron shells are close to the nucleus

• Because the electron shells are a long way from the nucleus

• Because the protons and neutrons are far apart

What charge do protons have in an atom?

• Positive charge

• Negative charge

• No charge

• Neutral charge

Which subatomic particle has no charge?

• Proton

• Neutron

• Electron

• Positron

What is the charge of electrons in an atom?

• Positive charge

• Negative charge

• No charge

• Double charge