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6. Which group is known as the Alkali Metals?
- Group 1
- Group 7
- Group 2
- Group 5
7. Which group is known as the Halogens?
- Group 5
- Group 7
- Group 2
- Group 1
8. Covalent bonding involves a transfer of electrons.
9. When atoms lose electrons, they become negatively charged.
10. What are the three giant covalent structures formed in covalent bonding?
- diamond, graphite and silicon dioxide
- graphite, sulphur dioxide and diamond
- lead, diamond and silicon dioxode
- silicon dioxide, carbon dioxide and graphite
11. What are nanoparticles?
- Particles which are billions times smaller than normal ones
- Particles which are billions times bigger than normal ones
- Particles which are thousands times bigger than normal ones
- Particles which are thousands times smaller than normal ones
12. An isotope is when two or more atoms of the same element all have a different number of neutrons.
13. What is yield?
- Weight of all equipment used to produce the product
- The amount of product obtained once produced
- Time taken for product to be produced
- The number of particles contained in a substance
14. Atom economy is the same as relative atomic mass.
15. What does the Haber process produce?
- Ammonia
- Nitrogen
- Hydrogen
- Water
16. Using a catalyst affects the rate of a reaction.
17. The higher the temperature in a reaction, the less collisions there are.
18. What is the cathode?
- The negative electrode in electrolysis
- The product which is produced by electrolysis
- The positive electrode in electrolysis
- The substance added to a solution before electrolysis
19. What things need to be in place for the purification of copper by electrolysis to take place?
- The electrodes should be made out of pure copper and the solution should not contain copper ions
- The solution should contain copper ions and the cathode should be made out of pure copper but the anode made out of impure copper
- The solution must not contain copper ions and both electrodes should not be made out of pure copper
- The electrodes should not be made out of pure copper and the solution should contain copper ions
20. Indicators are dyes which change colour depending on whether they are in acidic or alkaline solutions.