GCSEChemistry quiz

The Periodic Table

6 questions~1 min6 multiple choice

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The Periodic Table: all 6 questions

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1. How are elements arranged in the periodic table?
By atomic number
Elements are ordered by increasing atomic number — the number of protons in the nucleus.
2. What do elements in the same group share?
Outer electrons
Elements in the same group have the same number of outer-shell electrons, giving similar reactivity.
3. Which group contains the noble gases?
Group 0
Group 0 (or 18) holds the noble gases — they have full outer shells and are unreactive.
4. What are the group 1 elements commonly called?
Alkali metals
Group 1 are the alkali metals — lithium, sodium, potassium etc — highly reactive with water.
5. How does reactivity change down group 7?
Decreases
Reactivity DECREASES down Group 7 — outer electrons are further from the nucleus and harder to attract.
6. What does the period number tell you about an atom?
Its number of shells
The period number tells you how many electron shells the atom has.