Interactive Grade 8 Science Atomic Structure & the Periodic Table Test
Science · Grade 8 · 15 questions · 10 min
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Atomic Structure & the Periodic Table
1.
Which of the following statements best explains why the mass number of an atom is always a whole number?
2.
Aluminium (Al) has an atomic number of 13. Which of the following correctly shows the electron shell arrangement of a neutral aluminium atom?
3.
Carbon has an atomic number of 6. Carbon-12 and carbon-13 are two isotopes of carbon. What is the difference in the number of neutrons between these two isotopes?
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