Last updated on Sep 20, 2026

Equations (AQA GCSE Chemistry Combined Science): Quizzes

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Equations

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How are compounds represented in chemistry?

A formula of element symbols

How many elements are in sodium chloride ( $NaCl$ )?

2

How many atoms are in sodium chloride ( $NaCl$ )?

2

How many elements are in sodium oxide ( $Na_2O$ )?

2

How many atoms are in sodium oxide ( $Na_2O$ )?

3

How many atoms are in calcium carbonate ( $CaCO_3$ )?

5

How many atoms are in sodium sulfate ( $Na_2SO_4$ )?

7

How many atoms are in sodium hydroxide ( $NaOH$ )?

3

What is the total number of atoms in ammonium sulfate ( $(NH_4)_2SO_4$ )?

15

How many hydrogen atoms are in $(NH_4)_2$ ?

8

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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