GCSE Chemistry Paper 1 Mash-up

Which subatomic particle determines what element it is?

• Electron

• Proton

• Neutron

• Nucleus

• 8

• 14

• 18

• The same as the number of protons

Which is generally not a chemical property of transition metals?

• They can only have one oxidation state

• They are usually less reactive than group 1

• They form coloured complexes

• They are often used as catalysts

The number of what subatomic particle changes in an isotope of an element?

• Newton

• Electron

• Charge

• Neutron

Why do group 1 atoms get more reactive as you move down the group?

• Atoms get bigger, electron further from nucleus, takes more energy to remove as attraction is larger

• Atoms get smaller, electron closer to nucleus, takes more energy to remove as attraction is larger

• Atoms get bigger, electron further from nucleus, the WIMFs between atoms get weaker and take less energy to overcome

• Atoms get bigger, electron further from nucleus, takes less energy to remove as attraction is smaller

Why can iron conduct electricity?

• The positive metal ions are free to move and carry a charge even in a solid as it has metallic bonds

• It can conduct when solid and liquid as the delocalised electrons can carry the charge

• It can only conduct when aqueous as the ions can carry the charge

• It can only conduct when molten as the ions are free to move and carry the charge

What type of bonding is magnesium oxide?

• Simple molecular

• Giant covalent

• Ionic

• Metallic

Which of these can conduct electricity?

• Graphite

• SiO₂

• MgO (s)

• MgO (aq)

Why is chlorine gas at room temperature?

• The covalent bonds are strong, so when you break them, the atoms are only held together by WIMFs

• You only have to break strong intermolecular forces when boiling it, not break any bonds

• You only have to overcome the WIMFs, not break strong bonds, so requires little energy

• The energy has gone into breaking the bonds so there is less energy in the system, so it boils at lower temperature

How many bonds form around each carbon atom in graphene?

• 3

• 4

• 3 bonds, plus one WIMF

• There are only WIMFs between the molecules