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CCEA GCSE DAS Chemistry 2 (FT) > C2.9 Gas Chemistry > Flashcards

C2.9 Gas Chemistry Flashcards

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1
Q

List the 4 properties of Nitrogen

A

Colourless gas
Same density as air
Diatomic N2
Unreactive

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2
Q

List 2 uses of nitrogen

A

Coolant
Food packaging

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3
Q

List 3 uses of ammonia

A

Fertilizer
Nitric Acid
Nylon

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4
Q

What is the test for ammonia and what is the observation if present?

A

Dip glass rod in concentrated hydrochloric acid and put this in sample of the gas

If present, white smoke of ammonium chloride is observed

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5
Q

What are the 4 properties of hydrogen?

A

Colourless, odourless gas
Insoluble
Less dense than air
Diatomic h2

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6
Q

What are the 3 uses of hydrogen?

A

Weather balloons
Hardening oils
Clean fuel

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7
Q

What is the test for hydrogen and what is the result if it is present?

A

Place lit splint into collected gas

If H2 present, squeaky pop

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8
Q

What are the 4 properties of Oxygen?

A

Colourless odourless gas
Soluble
Same density as air
Diatomic O2

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9
Q

What are the 2 uses of oxygen?

A

Welding
Oxygen masks

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10
Q

What is the test for oxygen and what will be the result if oxygen is presnet?

A

Apply glowing splint
If present, splint will relight

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11
Q

What are the 3 observations in the test for oxygen?

A

Gas bubbles
Heat gave off
Manganese remains

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12
Q

What are the 3 properties of CO2?

A

Colourless odourless gas
Heavier than air
Soluble

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13
Q

What are the 3 uses of CO2?

A

Fire extinguishers
Fizzy drinks
Dry ice

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14
Q

What is the test for CO2 and what are the results if it is present?

A

Pass gas through limewater
If co2 present lime water changes from clear to milky

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15
Q

In the test for CO2, what will happen if their is an excess amount of CO2

A

Lime water will turn clear again.

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16
Q

What 5 chemicals are in our atmosphere?

A

Carbon Dioxide
Nitrogen
Argon
Oxygen
Water Vapour

17
Q

What catalyst is commonly used in the decomposition of hydrogen peroxide?

A

Manganese Dioxide

CCEA GCSE DAS Chemistry 2 (FT) (9 decks)

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