Practice Structure Of The Atom (4) - Structure of the Atom

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8 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a proton?
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Think about the charge and location in the atom.
Question 2.
Define atomic number.
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It's the number that defines the element.
3Question 3.
What particle is negatively charged?
- Proton
- Neutron
- Electron
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Remember the charges of subatomic particles.
4Question 4.
True or False: Isotopes have the same number of protons.
- True
- False
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Think about what isotopes are.
Question 5.
If a chlorine isotope has 17 protons and a mass number of 35, how many neutrons does it have?
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Use the formula: Mass Number = Protons + Neutrons.
Question 6.
Determine the valency of magnesium, given it has 12 protons and its outer shell can hold 2 electrons.
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Consider how many electrons it needs to lose or gain to achieve a stable octet.

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