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Chemistry, Science
7th -
12thgrade
Chemistry - Atomic structure (GCSE/IGCSE/CBSE/MYP/IB/ALevel)
15 questions
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- 1. Multiple Choice
What is found in the nucleus?
protons and electrons
neutrons and electrons
neutrons and protons
protons, neutrons and electrons
- 2. Multiple Choice
What is the relative mass of a proton?
0.0001
0.001
2
1
- 3. Multiple ChoiceWhat is the relative mass of a neutron?210.0010.0001
- 4. Multiple ChoiceWhat is the relative mass of an electron?0.00011/18351/25001/1800
- 5. Multiple ChoiceWhat is the relative charge of a proton?0+2+1-1
- 6. Multiple ChoiceWhat is the relative charge of a neutron?0+2+1-1
- 7. Multiple ChoiceWhat is the relative charge of an electron?0+2+1-1
- 8. Multiple ChoiceHow do you work out the number of protons of an element in the periodic table?it's the big numberit's the small numberbig number - small numberbig number + small number
- 9. Multiple Choice
How do you work out the number of neutrons of an element in the periodic table?
it's the big number
it's the small number
big number - small number
big number + small number
- 10. Multiple ChoiceHow do you work out the number of electrons?same as the small numbersame as the big numberbig number - small numberbig number + small number
- 11. Multiple Choice
What holds the protons and neutrons together in an atom?
electrostatic force of attraction
covalent bonds
ionic bonds
strong nuclear force
- 12. Multiple Choice
Why do atoms have no overall charge?
Because they have different numbers of protons, neutrons and electrons and they eventually cancel each other out.
Because they have neutrons which are neutral and don't have a charge.
Because they have equal numbers of protons and neutrons and the nucleus is neutral.
Because they have equal number of protons and electrons. Their charges cancel each other out.
- 13. Fill in the Blank
Define relative atomic mass.
The relative atomic mass is the ................. mass of an element's isotopes compared to the mass of 1/12 of C12.
- 14. Multiple Choice
What is the size of the nucleus?
1 x 10-15m
1 x 10-14m
1 x 10-13m
1 x 10-12m
- 15. Multiple Choice
What is the size of an atom?
1 x 10-9m
1 x 10-10m
1 x 10-11m
1 x 10-12m
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