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6. Who described atoms as different spheres that make up different elements
- John Dalton
- Democritus
- J J Thompson
- Ernest Rutherford
7. How were elements ordered before the periodic table?
- By proton number
- By relative atomic mass
- By atom numbers
- By weight
8. Who proposed that electrons orbit the nucleus in fixed shells?
- Ernest Rutherford
- Ernest Marsdon
- Niels Bohr
- J J Thompson
9. What did the gold foil experiment descover?
- That an atom was mainly empty space with a nucleus in the centre and an electron orbiting it
- Neutrons
- That everything was made up of tiny particles
- Electrons and made the plum pudding model
10. What is Filtration?
- Splitting atoms
- Separating different dyes in an ink
- Separating a solid from a liquid
- Separating liquids
11. What are the properties of alkali metals (Group 1)?
- Not reactive
- Soft and low-density. Decreases in reactivity and melting and boiling points as it goes down
- Hard and high boiling and melting points increasing
12. What is the charge of an electron?
13. What is an isotope?
- Element with different number of neutrons
- Element with different number of protons
- Element with different amount on electrons
- A combination of elements
14. What are the properties of Noble gases (Group 8)
- Not reactive and boiling points increase as you go down
- Soft and low-density. Decreases in reactivity and melting and boiling points as it goes down
- Hard and high boiling and melting points increasing
- Transition metals
15. What is Distillation?
- Separating different dyes in an ink
- Separating a solid from a liquid
- Separating liquids
- Separating different dyes in an ink
16. Who discovered the neutron?
- Niels Bohr
- James Chadwick
- Democritus
- Ernest Marsdon
17. What is the Mass number?
- No. of electrons + No. of neutrons
- No. of protons + No. of neutrons
- No. of protons + No. of electrons
18. What is the electron configuration?
- 2, 2, 2, 2...
- 8, 8, 8, 8...
- 2, 8, 8, 8...
- 2, 2, 8, 8...