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Practical Work

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Total cards: 10•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (10)

#1
Front (Question)

Test for ammonium ions

Back (Answer)

• React the salt with sodium hydroxide solution in a test tube • Warm gently • Test gas produced with damp red litmus paper If positive - Litmus paper turns blue

#2
Front (Question)

How can you distinguish between group two cations?

Back (Answer)

Using sulfuric acid and sodium hydroxide, as the solubility of group two sulfates and hydroxides varies down the group. (Alternatively - flame tests)

#3
Front (Question)

Flame test for calcium

Back (Answer)

Brick red

#4
Front (Question)

Flame test for strontium

Back (Answer)

Red

#5
Front (Question)

Flame test for barium

Back (Answer)

Pale green

#6
Front (Question)

Test for hydroxide ions in aqueous solution

Back (Answer)

• Add universal indicator to the test solution If positive - colourless solution turns blue

#7
Front (Question)

Test for carbonate ions in aqueous solution

Back (Answer)

• Add equal volumes of test solution and dilute HCl in a test tube • Collect gas produced with a pipette • Test gas with lime water If positive - lime water turns cloudy

#8
Front (Question)

Test for sulfate ions in aqueous solution

Back (Answer)

• Add equal volumes of test solution and dilute HCl in a test tube • Add an equal volume of barium chloride solution If positive - white precipitate forms

#9
Front (Question)

What is lime water?

Back (Answer)

An aqueous solution of calcium hydroxide

#10
Front (Question)

Test for water

Back (Answer)

Cobalt chloride paper Colour change from blue to pink