Practice Atomic Number (z) (3.1) - Atomic Structure - IB 10 Sciences (Group 4)

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10 questions

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4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the atomic number of oxygen?
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Look at the periodic table.
Question 2.
What is the mass number of nitrogen with 7 protons and 7 neutrons?
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Add protons and neutrons together.
3Question 3.
What does the atomic number represent?
- Number of Neutrons
- Number of Protons
- Mass Number
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Remember that Z stands for protons.
4Question 4.
True or False: Isotopes have the same number of protons but different numbers of electrons.
- True
- False
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Focus on what isotopes represent.
Question 5.
Determine the identity of an unknown element with an atomic number of 26. Explain its position in the periodic table.
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Look it up in the periodic table.
Question 6.
If an element has an atomic number of 15 and a mass number of 31, how many neutrons does it have? Discuss its possible isotopes.
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Subtract the atomic number from the mass number to find neutrons.

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