Last updated on Sep 22, 2026

Compounds (AQA GCSE Chemistry Combined Science): Quizzes

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Compounds

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What is a compound?

Two or more elements chemically joined

How do compounds' properties compare to their elements?

Chemically different properties

Which elements are in water ( $H_2O$ )?

Hydrogen and Oxygen

How many atoms are in one molecule of water ( $H_2O$ )?

3 atoms

How many hydrogen atoms are in water ( $H_2O$ )?

2 hydrogen atoms

Which elements make up table salt ( $NaCl$ )?

Sodium and Chlorine

How many atoms are in table salt ( $NaCl$ )?

2 atoms

Which elements are in sulfuric acid ( $H_2SO_4$ )?

Hydrogen, Sulfur, Oxygen

How many oxygen atoms are in sulfuric acid ( $H_2SO_4$ )?

4 oxygen atoms

How many atoms in total are in sulfuric acid ( $H_2SO_4$ )?

7 atoms

Which compound contains three different elements?

Sulfuric acid ( $H_2SO_4$ )

Explore AQA GCSE Chemistry Combined Science Revision Notes by Topics

Simple Model of the Atom

The Periodic Table

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Simple Model of the Atom

The Periodic Table

Explore AQA GCSE Chemistry Combined Science Flashcards by Topics

Simple Model of the Atom

The Periodic Table

Explore AQA GCSE Chemistry Combined Science Exam Questions by Topics

Simple Model of the Atom

The Periodic Table

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