Last updated on Oct 23, 2026

Halides (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards

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Halides

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How do halide ions form?

Halogens gain an electron

Charge on halide ions

Negative

Name three halide ions

$Cl^-$ , $Br^-$ , $I^-$

Reagent to test for halide ions

Aqueous silver nitrate ( $AgNO_3$ )

What do halides + $AgNO_3$ produce?

A precipitate

What indicates which halide ion is present

Colour of precipitate

Precipitate colour with $Cl^-$

White

Precipitate from $Cl^-$ + $AgNO_3$

Silver chloride ( $AgCl$ )

Precipitate colour with $Br^-$

Cream

Precipitate from $Br^-$ + $AgNO_3$

Silver bromide ( $AgBr$ )

Precipitate colour with $I^-$

Yellow

Precipitate from $I^-$ + $AgNO_3$

Silver iodide ( $AgI$ )

Explore OCR GCSE Chemistry A (Gateway Science Suite) Revision Notes by Topics

Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

Explore OCR GCSE Chemistry A (Gateway Science Suite) Model Answers by Topics

Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

Explore OCR GCSE Chemistry A (Gateway Science Suite) Quizzes by Topics

Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

Explore OCR GCSE Chemistry A (Gateway Science Suite) Exam Questions by Topics

Purity, Formulations & Chromatography

Identification of Common Gases

Methods of Identifying Ions

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