Gas Chemistry Flashcards

1
Q

What will happen when carbon is burned in a plentiful supply of oxygen?

A

Gas given off
Glows bright orange
Heat given off

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2
Q

When copper is heated in oxygen what solid is formed?

A

Copper oxide

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3
Q

What colour change would you observe when copper is heated in oxygen?

A

Red-Brown to Black

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4
Q

How would you burn magnesium in air?

A

Use tongs
Hold Mg ribbon at the end
Put into blue flame of Bunsen

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5
Q

What safety precautions should you take when burning Mg in air?

A

Goggles

Keep at arms length

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6
Q

What would you observe when Mg is burned in air?

A

Bright white light

White ash produced

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7
Q

What are 2 physical properties of nitrogen gas?

A

Colourless

Odourless

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8
Q

What are some uses for nitrogen?

A

Coolant, food packaging, manufacture ammonia

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9
Q

What is the second most abundant gas in our atmosphere?(nitrogen is first)

A

Oxygen

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10
Q

Which is a atmospheric gas?

Argon. Hydrogen. Chlorine.

A

Argon

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11
Q

What are some physical properties of sulphur?

A

Odourless, solid yellow powder, brittle, insoluble in water

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12
Q

What colour is the flame when soulful burns in air?

A

Blue

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13
Q

What word describes the smell of sulfur gas?

A

Pungent

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14
Q

What proportion of the atmosphere is made up of nitrogen?

A

80%

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15
Q

What are 3 properties of nitrogen gas?

A

Very unreactive,colourless, no smell

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16
Q

What is the formula for nitrogen gas?

17
Q

What are 2 properties of hydrogen gas?

A

Less dense than air

Colourless

18
Q

What happens if a lighted splint is placed in a test tube of hydrogen gas?

A

Squeaky pop

19
Q

What type of element is Magnesium?

20
Q

What type of element is Carbon?

21
Q

What type of element is Sulfur?

22
Q

What type of element is Iron?

23
Q

What type of element is copper?

24
Q

What type of reaction is magnesium?

A

Highly exothermic

Burns with bright white flame

25
What type of reaction is carbon?
Exothermic | Glows orange when heated strongly
26
What type of reaction is sulfur?
Burns slowly with blue flame
27
What type of reaction is Iron?
Burns with orange sparks
28
What type of reaction is Copper?
Glows red, occasionally with blue-green flame
29
What is the oxide for magnesium?
Magnesium oxide, MgO- solid white powder
30
What is the oxide for Carbon?
Carbon dioxide CO2 - colourless, odourless gas
31
What is the oxide for sulfur?
Sulfur dioxide, SO2 - colourless gas with choking smell
32
What is the oxide for Iron?
Triiron tetroxide, Fe3O4- Black solid powder
33
What nature is magnesium?
Basic
34
What nature is Carbon?
Acidic
35
What nature is sulfur?
Acidic
36
What nature is iron?
Basic
37
What nature is copper?
Basic
38
What to basic oxides react with?
Acids
39
What do acidic oxides react with?
Alkalis