Tests For Ions And Gases Flashcards

1
Q

How to perform a flame test

A

Dip a piece of nichrome wire into the salts containing ions and then place in a flame

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2
Q

Lithium burns with a … Flame

A

Crimson red

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3
Q

Sodium burns with a … Flame

A

Yellow Orange

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4
Q

Potassium burns with a … Flame

A

Lilac

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5
Q

Calcium burns with a .. Flame

A

Brick red / orange red

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6
Q

Copper reacts with Sodium hydroxide to form a … Precipitate

A

Blue

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7
Q

Iron (II) reacts with sodium hydroxide to form a … Precipitate

A

(‘Dirty’) green

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8
Q

Iron (III) reacts with sodium hydroxide to form a … Precipitate

A

Orange brown (‘rust’)

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9
Q

Test for ammonium ions (NH(4+)) by…

A

Heating gently and add sodium hydroxide solution. It will give off a distinctive smell of ammonia (NH3)

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10
Q

Ammonia (NH3) can be tested by…

A

Using damp red litmus paper. Since it is alkaline it will turn damp red litmus paper blue

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11
Q

Test for hydrogen by…

A

Holding a lot splint in presence of hydrogen. It produces a squeaky pop

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12
Q

Test for oxygen by…

A

Holding a glowing splint in the gas. If it is oxygen the splint will relight

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13
Q

Test for Carbon dioxide

A

Bubble it through limewater, which will turn cloudy

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14
Q

Test for ammonia by….

A

Holding damp red litmus paper in ammonia gas, which will turn the damp red litmus paper blue

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15
Q

Test for chlorine by…

A

Holding damp blue litmus paper on chlorine gas, which will turn it red then white

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16
Q

All acids are soluble/insoluble

A

Soluble

17
Q

All nitrates are soluble/insoluble

A

Soluble

18
Q

All sulphates are soluble/insoluble except …

A

Soluble except barium and lead (II) sulphate

19
Q

All chlorides are soluble/insoluble except…

A

Soluble except lead (II) and silver chloride

20
Q

All …, … And … Compounds are soluble

A

Sodium, potassium and ammonium

21
Q

Most carbonates and hydroxides are soluble/insoluble (except …, … And …)

A

Insoluble (except for potassium, sodium and ammonium)

22
Q

I’ve missed out some things as I don’t understand them yet but I will add them later

A

Hopefully