Chemical Analysis: Identifying Ions

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Total cards: 20•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (20)

Front (Question)

Lithium flame test result

Back (Answer)

crimson

Front (Question)

Sodium flame test result

Back (Answer)

yellow

Front (Question)

Potassium flame test result

Back (Answer)

lilac flame

Front (Question)

Calcium flame test result

Back (Answer)

orange/red

Front (Question)

Copper flame test result

Back (Answer)

green flame

Front (Question)

Copper sodium hydroxide test result

Back (Answer)

blue precipitate

Front (Question)

Iron (II) sodium hydroxide test result

Back (Answer)

green precipitate

Front (Question)

Iron (III) sodium hydroxide test result

Back (Answer)

brown precipitate

Front (Question)

Aluminium sodium hydroxide test result

Back (Answer)

white precipitate, dissolves in excess to form a colourless solution

#10

Front (Question)

Calcium sodium hydroxide test result

Back (Answer)

white precipitate

#11

Front (Question)

Magnesium sodium hydroxide test result

Back (Answer)

white precipitate

#12

Front (Question)

Describe the test for carbonate anions.

Back (Answer)

• Add dilute acid • Fizzing/effervesence observed as CO2 is released • Collect gas and bubble it through limewater • Limewater goes cloudy

#13

Front (Question)

Describe the test for sulfate anions.

Back (Answer)

• Add dilute hydrochloric acid • Add barium chloride solution. • White precipitate forms

#14

Front (Question)

Describe the test for halide anions.

Back (Answer)

• Add dilute nitric acid • Add silver nitrate solution

#15

Front (Question)

What are the results for the halide ion tests?

Back (Answer)

chloride - white precipitate bromide - cream precipitate iodide - pale yellow precipitate

#16

Front (Question)

Describe how to perform a flame test to identify metal ions.

Back (Answer)

• Clean a nichrome wire loop by holding it in a blue flame from a bunsen burner. • Dip the loop into the sample you want to test and put it back in the flame. • Record the colour of the flame.

#17

Front (Question)

What are the limitations of doing a flame test?

Back (Answer)

• only works for samples that contain a single metal ion • if the sample tested contains a mixture of metal ions then the flame colours of som ions may be masked by the colours of others

#18

Front (Question)

What are the equations for the halide tests?

Back (Answer)

Ag+(aq) + Cl-(aq) → AgCl(s) Ag+(aq) + Br-(aq) → AgBr(s) Ag+(aq) + I-(aq) → AgI(s)

#19

Front (Question)

Whats the equation for the sulfate ion test?

Back (Answer)

Ba2+ + SO42-(aq) → BaSO4(s)

#20

Front (Question)

What are the advantages of using flame emission spectroscopy to identify ions?

Back (Answer)

• very sensitive - they can detect very small amounts of substances • very fast • very accurate