Free GCSE Chemistry Practice Test

Ten core GCSE chemistry questions on atoms, the periodic table, bonding and acids, each explained in a line.

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1. What is the chemical symbol for sodium?

Answer: Sodium's symbol comes from its Latin name, natrium: Na.

2. What is the pH of a neutral solution?

Answer: Neutral is 7; below is acidic, above is alkaline.

3. The atomic number of an element tells you the number of …

Answer: Atomic number = the number of protons in the nucleus.

4. Group 1 metals are known as …

Answer: Group 1 metals form alkaline solutions with water: the alkali metals.

5. Which gas is produced when a metal reacts with an acid?

Answer: Metal + acid → salt + hydrogen (the squeaky pop test).

6. What is the charge on an electron?

Answer: Electrons carry a negative charge; protons are positive, neutrons neutral.

7. What is the formula of water?

Answer: Two hydrogen atoms and one oxygen atom: H₂O.

8. In which group of the periodic table are the noble gases?

Answer: The unreactive noble gases sit in Group 0 (sometimes called Group 8).

9. A covalent bond forms when atoms …

Answer: Covalent bonds form when non-metal atoms share electrons; ionic bonds involve a transfer.

10. Acid + alkali → …

Answer: Neutralisation: acid + alkali → salt + water.

About this test

Chemistry builds steadily: atomic structure explains the periodic table, which explains bonding, which explains reactions. Gaps early on make everything after feel harder, so these questions start at the foundations.

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