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1.1.1 Atoms, elements and compounds

Card 1 of 20

Why is a substance containing only one type of atom classified as an element?

A

It contains carbon and oxygen in a fixed ratio of 1:21:21:2.

B

Ions that appear unchanged on both sides of an ionic equation are called spectator ions and are cancelled.

C

A balanced equation uses coefficients to change particle numbers without changing chemical formulae.

D

It contains atoms with the same number of protons.

Card 1 of 20

1.1.1 Atoms, elements and compounds Flashcards

  1. GCSE
  2. /Chemistry
  3. /1.1.1 Atoms, elements and compounds

20 flashcards on AQA GCSE Chemistry 1.1.1 Atoms, elements and compounds: the key terms, definitions and equations you need to recall for Paper 1 and Paper 2.

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