Tests Flashcards

1
Q

What is the ion of lithium and how does it burn

A

Li+ and with a red flame

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2
Q

What is the ion of sodium and how does it burn

A

Na+ and with a yellow flame

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3
Q

What is the ion of potassium and how does it burn

A

K+ and with a lilac flame

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4
Q

What is the ion of calcium and how does it burn

A

Ca2+ and with an orange-red flame

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5
Q

What is the ion of copper and how does it burn

A

Cu2+ and with a blue-green flame

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6
Q

What is the colour of the precipitate when copper reacts with a metal hydroxide

A

Blue

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7
Q

What is the colour of iron when it reacts with a metal hydroxide

A

Green

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8
Q

What is the colour of iron (III) when it reacts with a metal hydroxide

A

Reddish brown

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9
Q

How can you test for the presents of ammonia gas

A

It will turn damp red litmus paper blue
It is harmful to your eyes and gives ff a strong smell

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10
Q

How can you test for the presence of carbonates

A

Add HCL to your substance and carbon dioxide will be produced

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11
Q

How can you test for the presence of sulphates

A

Add HCL as well as barium chloride solution to your substance and a white precipitate of of barium sulphate will be produced

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12
Q

How can you test for the presence of halids

A

Add dilute nitric acid, followed by silver nitrate solution

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13
Q

What colour is the precipitate of silver chloride

A

White

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14
Q

What colour is the silver precipitate of silver bromide

A

Cream

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15
Q

What colour is the precipitate of silver iodide

A

Yellow

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16
Q

How can you test for chlorine gas

A

Bleaches damp blue litmus paper white/red

17
Q

How can you test for oxygen gas

A

It will relight a glowing splint

18
Q

How can you test for carbon dioxide gas

A

It will turn limewater cloudy

19
Q

How can you test for hydrogen gas

A

It will make a squeaky pop with a lighted splint

20
Q

How can you test for ammonia gas

A

Turns damp red litmus paper blue

21
Q

How can you used copper (II) sulphate crystals to test for water

A

Heat the blue hydrated copper (II) sulphate crystals to drive the water off
This leaves a white anhydrous copper (II) sulphate powder
If you add a few drops of water to the powder, the crystals will return again

22
Q

How can you test for pure water

A

Pure water will boil at 100 degrees Celsius
Pure water will freeze at 0 degrees Celsius

23
Q

What is the formula for sulphuric acid

24
Q

What is the formula for hydrochloric acid

25
Q

What is the formula for nitric acid