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Chemistry Year 10 > Preparation, Uses and Testing For Gases > Flashcards

Preparation, Uses and Testing For Gases Flashcards

1
Q

We live in a mixture of gases which is called?

A

Air

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2
Q

5 composiotions of air are?

A

Nitrogen
Oxygen
Carbon Dioxide
Noble gas
Water vapour

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3
Q

What is the most abundent constituent of the atmosphere?

A

Nitrogen

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4
Q

Properties of Nitrogen?

A

Colourless, odourless, tasteless gas
Same density as air
Insoluble in water
Does not burn or support combustion

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5
Q

Is Nitrogen reactive or non reactive?

A

Unreactive

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6
Q

Name 2 uses of Nitrogen

A

Food packaging , Coolant

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7
Q

Is Oxygen reactive or non reactive?

A

Reactive

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8
Q

What are the properties of Oxygen?

A

Colourless, odourless, tasteless gas
same density as air
slightly soluble in water
supports combustion

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9
Q

Describe lab preparation of oxygen

A

1) pour some hyrogen peroxide into a test tube
2) add small amount of manganese dioxide
3) place thumb over test tube to trap gas
4) light a splint and blow it out
5) place glowing splint into test tube and observe

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10
Q

What is the word equation for how hydrogen peroxide decomposses

A

Hydrogen peroxide - water + oxygen

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11
Q

What does a catalyst do in the prepaation of oxygen?

A

speeds up the decomposition of hydrogen peroxide

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12
Q

What is the test for oxygen?

A

Relights a glowing splint

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13
Q

Give 3 uses of oxygen

A

medicine, welding, rocket engines

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14
Q

Are all nble gases found in air?

A

Yes, but mostly helium, neon and argon

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15
Q

Are Noble reactive or unreactive gases?

A

The most unreactive gases

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16
Q

What are the 2 properties of noble gases?

A

1) colourless, odourless and tasteless gases
2) very unreactive and cannot be made in the lab

17
Q

Why are noble gases unreactive?

A

They have a full outer shell of electrons

18
Q

What is helium used for?

A

In balloons and airships

19
Q

What is argon used for?

A

used in lightbulbs

20
Q

What is neon used for?

A

neon lights in advertising

21
Q

Where does Hydrogen occur?

A

It does not ccur in air but occurs in water, oil, natural gas and all living things

22
Q

What are the physical properties of Hydrogen?

A

1) colourless, odourless ansd tastelessless
2) less dense than air (lightest of all gases)
3) insoluble in water
4) burns explosively in air

23
Q

Complete the word equation:
Magnesium + Hydrochloric

A

magnesium chloride +hydrogen

24
Q

What is the test for hydrogen?

A

A lighted splint burns with a pop

Chemistry Year 10 (6 decks)

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