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Periodic Table Year 8 quiz UK
🧪 Periodic Table – Year 8 Quiz (20 Questions)
1. What does the periodic table show?
Correct answer: B – All known elements
2. The atomic number tells us the number of ________ in an atom.
protons
3. Who created the first periodic table in 1869?
Dmitri Mendeleev
4. True or False: Modern periodic table is arranged by atomic mass.
False – it is arranged by atomic number
5. Vertical columns in the periodic table are called:
Correct answer: C – Groups
6. Horizontal rows in the periodic table are called ________.
Periods
7. Elements in the same group have:
Correct answer: C – Similar properties
8. Period number tells us the number of __________.
electron shells
9. True or False: Metals are good conductors of electricity.
True
10. Which of the following is a metal?
Correct answer: C – Iron
11. Non-metals are usually:
Correct answer: C – Dull and poor conductors
12. Elements that have properties of both metals and non-metals are called:
Metalloids
13. Which element is a metalloid?
Correct answer: C – Silicon
14. Group 1 elements are also called:
Alkali metals
15. True or False: Group 1 metals react with water.
True
16. Reactivity of Group 1 metals __________ down the group.
increases
17. Group 7 elements are known as:
Halogens
18. Which of these is a Group 7 element?
Correct answer: B – Chlorine
19. Group 0 elements are very __________.
unreactive
20. Why are noble gases unreactive?
They have full outer electron shells