Gas Chemistry

Question 1

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

Answer 1

Gas given off
Glows bright orange
Heat given off

Question 2

When copper is heated in oxygen what solid is formed?

Answer 2

Copper oxide

Question 3

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

Answer 3

Red-Brown to Black

Question 4

How would you burn magnesium in air?

Answer 4

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

Question 5

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

Answer 5

Goggles

Keep at arms length

Question 6

What would you observe when Mg is burned in air?

Answer 6

Bright white light

White ash produced

Question 7

What are 2 physical properties of nitrogen gas?

Answer 7

Colourless

Odourless

Question 8

What are some uses for nitrogen?

Answer 8

Coolant, food packaging, manufacture ammonia

Question 9

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

Answer 9

Oxygen

Question 10

Which is a atmospheric gas?

Argon. Hydrogen. Chlorine.

Answer 10

Argon

Question 11

What are some physical properties of sulphur?

Answer 11

Odourless, solid yellow powder, brittle, insoluble in water

Question 12

What colour is the flame when soulful burns in air?

Answer 12

Blue

Question 13

What word describes the smell of sulfur gas?

Answer 13

Pungent

Question 14

What proportion of the atmosphere is made up of nitrogen?

Answer 14

80%

Question 15

What are 3 properties of nitrogen gas?

Answer 15

Very unreactive,colourless, no smell

Question 16

What is the formula for nitrogen gas?

Answer 16

N2

Question 17

What are 2 properties of hydrogen gas?

Answer 17

Less dense than air

Colourless

Question 18

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

Answer 18

Squeaky pop

Question 19

What type of element is Magnesium?

Answer 19

Metal

Question 20

What type of element is Carbon?

Answer 20

Non metal

Question 21

What type of element is Sulfur?

Answer 21

Non metal

Question 22

What type of element is Iron?

Answer 22

Metal

Question 23

What type of element is copper?

Answer 23

Metal

Question 24

What type of reaction is magnesium?

Answer 24

Highly exothermic

Burns with bright white flame

Question 25

What type of reaction is carbon?

Answer 25

Exothermic

Glows orange when heated strongly

Question 26

What type of reaction is sulfur?

Answer 26

Burns slowly with blue flame

Question 27

What type of reaction is Iron?

Answer 27

Burns with orange sparks

Question 28

What type of reaction is Copper?

Answer 28

Glows red, occasionally with blue-green flame

Question 29

What is the oxide for magnesium?

Answer 29

Magnesium oxide, MgO- solid white powder

Question 30

What is the oxide for Carbon?

Answer 30

Carbon dioxide CO2 - colourless, odourless gas

Question 31

What is the oxide for sulfur?

Answer 31

Sulfur dioxide, SO2 - colourless gas with choking smell

Question 32

What is the oxide for Iron?

Answer 32

Triiron tetroxide, Fe3O4- Black solid powder

Question 33

What nature is magnesium?

Answer 33

Basic

Question 34

What nature is Carbon?

Answer 34

Acidic

Question 35

What nature is sulfur?

Answer 35

Acidic

Question 36

What nature is iron?

Answer 36

Basic

Question 37

What nature is copper?

Answer 37

Basic

Question 38

What to basic oxides react with?

Answer 38

Acids

Question 39

What do acidic oxides react with?

Answer 39

Alkalis