Skip to content
Back to quiz
6. The two conditions/elements needed for rust are what?
- Water and carbon dioxide
- Water and oxygen
- Oxygen and carbon dioxide
- Oxygen and copper
7. Why is cryolite added in the extraction of aluminium?
- It speeds up the reaciton
- It looks pretty
- It lowers the melting point
- It raises the melting point
8. What is the general formula for alkanes?
- CnH2n+2
- CnH2n
- CnH2n-2
- CnHn+2
9. Metals that are more reactive than carbon are extracted in what way?
- Electrolysis
- Titrations
- The Blast Furnace
- Burning
10. Concentration=???
- Moles/volume
- volume x Mr
- Volume/moles
- moles x volume
11. In the excess solid method, you need what type of base and an acid?
- Hot
- Reactive
- Insoluble
- Soluble
12. In group 1, how does the reactivity change as you go down the group?
- It doubles
- It increases
- It decreases
- It stays the same
13. Phenolphthalein is what colour in acids?
- White
- Colourless
- Pink
- Blue
14. Isotopes have a different number of what?
- Electron shells
- Neutrons
- Electrons
- Protons
15. When adding sodium hydroxide solution, Copper forms a what colour precipitate?
- Sludgy green
- Brown
- Blue
- Purple
16. The relative mass of an electron is what?
17. In a flame test, Lithium burns with which colour flame?
- Red
- Purple
- Blue
- Brick red
18. Which structure conducts electricity when molten or dissolved?
- Giant ionic
- Simple covalent
- Giant covalent
- Giant metallic