TOPIC 9 - Separate Chemistry 2

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

Colour of lithium ion flame

Back (Answer)

Red

Front (Question)

Colour of sodium ion flame

Back (Answer)

Yellow

Front (Question)

Potassium ion flame color

Back (Answer)

Lilac

Front (Question)

Calcium ion flame

Back (Answer)

Orange-red

Front (Question)

Copper ion flame color

Back (Answer)

Blue-green

Front (Question)

Test for metal ions involving precipitate

Back (Answer)

Add sodium hydroxide solution to the solution and metal hydroxide may precipitate out of solution.

Front (Question)

Aluminium precipitate color and ionic equation

Back (Answer)

White before redissolving in excess sodium hydroxide w colourless solution. Al3+ + 3OH-»_space; Al(OH)3

Front (Question)

Calcium precipitate color and ionic equation

Back (Answer)

White Ca2+ + 2OH-»_space; Ca(OH)2

Front (Question)

Copper precipitate color and ionic equation

Back (Answer)

Blue Cu2+ + 2OH-»_space; Ca(OH)2

#10

Front (Question)

Iron(II) precipitate color and ionic equation

Back (Answer)

Green Fe2+ + 2OH-»_space; Fe(OH)2

#11

Front (Question)

Iron(II) precipitate color and ionic equation

Back (Answer)

Brown Fe3+ + 3OH-»_space; Fe(OH)3

#12

Front (Question)

How do you work out whether a substance contains ammonium ions?

Back (Answer)

Add sodium hydroxide solution and gently heat, ammonia gas will be given off.

#13

Front (Question)

How do you test for ammonia gas?

Back (Answer)

Hold a piece of damp red litmus paper over and ammonia gas will turn it blue.

#14

Front (Question)

How do you test for halide ions?

Back (Answer)

Add dilute nitric acid before a few drops of silver nitrate solution.

#15

Front (Question)

Chloride precipitate When testing for anions

Back (Answer)

White precipitate of silver chloride

#16

Front (Question)

Bromide precipitate When testing for anions

Back (Answer)

Cream precipitate of silver bromide

#17

Front (Question)

Iodide precipitate When testing for anions

Back (Answer)

Yellow precipitate of silver iodide

#18

Front (Question)

How do you test for carbonate ions? Symbol equation?

Back (Answer)

Add dilute acid and mixture will fizz as it will produce carbon dioxide gas. CO32- + 2H+»_space; CO2 + H2O

#19

Front (Question)

How do you test for sulphate ions?

Back (Answer)

Add dilute hydrochloric acid before adding barium chloride solution, sulfate ions will produce a white precipitate of barium sulfate.

#20

Front (Question)

Flame photometry

Back (Answer)

Instrumental method allowing identification of ions in a dilute solution. Each ion produced a unique line spectrum.

#21

Front (Question)

Why is flame photometry better than flame tests on specific occasions?

Back (Answer)

As can identify ions within a mixture which flame tests can’t.

#22

Front (Question)

Advantages of using machines to analyse unknown substances

Back (Answer)

V sensitive V fast V accurate

#23

Front (Question)

Homologous series

Back (Answer)

A group of chemicals w similar chemical structures and functional group while sharing a trend in chemical properties.

#24

Front (Question)

Alkanes

Back (Answer)

Homologous series of hydrocarbons w general formula CnH2n+2. They are saturated.