Other questions in this quiz

2. What is a physical change?

  • something that can not be changed back
  • Reversible change
  • irreversible change

3. What is Relative atomic mass?

  • Atoms of different elements weigh different amounts .
  • atoms of different elements weigh the same

4. What is the Mass number?

  • Total number of protons and neutrons/ top number
  • bottom number
  • atomic number
  • proton number

5. What did John Dalton discover?

  • plum pudding
  • Elements are made up of one kind of atom? Billard ball
  • gold foil
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