Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Chemistry Aliyya > Gas Chemistry > Flashcards

Gas Chemistry Flashcards

1
Q

do you love your mom?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the composition of Nitrogen in our atmosphere?

A

78%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the composition of oxygen in our atmosphere?

A

21%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the composition of carbon dioxide in our atmosphere?

A

0.03-0.04%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the composition of Argon and other gases in our atmosphere?

A

1%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are 4 of Nitrogen’s properties?

A

Colourless, Odourless, insoluble in water, Unreactive

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Why is Nitrogen so unreactive?

A

Due to it’s structure- Two N atoms joined by a strong triple covenant bond meaning it’s diatomic. Lots of energy is required to break the bonds.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are 3 uses of Nitrogen?

A

Coolant, inert gas-packaging food, transporting vaccines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is the formula for Ammonia?

A

NH3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is Ammonia?

A

It is a colourless, pungent gas that is soluble in water and less dense than air.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is Ammonia used for?

A

To produce fertilisers by reacting with acids, e.g- Hydrochloric acid (HCl) and nitric( HNO3)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

NH3+ HCL= ?

A

NH4Cl (ammonium chloride)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

NH3+ HNO3=?

A

NH4NO3 ( Ammonium nitrate)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Why is Ammonia a good fertiliser?

A

As the ammonium salts are very soluble in water so they can dissolve in soil water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How do you test for Ammonia?

A
  • Use à glass rod dipped in concentrated Hydrochloric acid.
  • Place in a sample of Ammonia gas
  • If ammonia is present a white smoke of ammonium chloride will be seen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are 4 physical properties of Hydrogen?

A
  • Colourless, odourless gas
  • Insoluble in water
  • Less dense than air
  • Diatomic, H2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How is hydrogen used?

A

Weather balloons carry instruments into the atmosphere to send back information on atmospheric pressure, temperature, humidity and wind speed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are 2 other uses of Hydrogen?

A
  • Hardening oils

- Using hydrogen as a clean fuel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

How does Hydrogen harden oils?

A

By adding hydrogen to a vegetable oil it raises the melting point so can make it harder at room temperature- into margarine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Why can hydrogen be used as a clean fuel?

A

As when it burns it produces water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What is the test for Hydrogen gas?

A

A lighted splint makes a squeaky pop when in contact with hydrogen gas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

How do you prepare hydrogen?

A

By reacting zinc or magnesium with dilute hydrochloric acid.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What are the 4 properties of Oxygen?

A
  • Colourless
  • Odourless
  • Denser than air
  • Exists as two oxygen atoms bonded together- O2
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What is the test for oxygen?

A

Oxygen relights a glowing splint.

25
What are two uses of oxygen?
- In welding | - In medicine- breathing difficulties
26
How do you prepare oxygen?
Catalyst- Manganese(IV) oxide is put into hydrogen peroxide to speed the process in which hydrogen peroxide decomposes to produce water and OXYGEN.
27
How do you collect Oxygen?
It can be collected over water as it has a low solubility in water.
28
Why do metals burn in oxygen?
To produce basic oxides
29
Why do non-metals burn in oxygen?
To produce acidic dioxides
30
What is produced when magnesium(2Mg) burns in oxygen(O2)?
Magnesium oxide(2MgO)- white solid powder
31
What is produced when copper( 2Cu) burns in oxygen(O2)
Copper(II) oxide(2CuO)- Black solid powder layer on copper
32
What is produced when iron(3Fe) is burned in oxygen(2O2)
Iron oxide(Fe3O4)- Black solid
33
What is produced when Sulfur(S) is burned in oxygen(O2)?
Sulfur dioxide(SO2)- Colourless pungent gas
34
What is produced when carbon(C)burns in oxygen?
Carbon dioxide( CO2) - colourless gas
35
Describe the colour change when Magnesium burns in Oxygen
Grey solid- White solid
36
Describe the colour change when copper burns in oxygen...
Red brown solid- Black layer
37
Describe the colour change when Iron burns in Oxygen...
Grey solid- Black solid
38
Describe the colour change when sulfur burns in oxygen...
Yellow solid- Colourless pungent gas
39
Describe the colour change when Carbon burns in oxygen...
Black solid- Colourless gas
40
What do you observe when Magnesium burns in oxygen...
White light
41
What do you observe when copper burns in oxygen?
Glows red, occasionally with blue- green flame
42
What do you observe when Iron burns in oxygen?
Orange sparks
43
What do you observe when Sulfur burns in oxygen?
Blue flame, Bad smell, melts into red liquid
44
What do you observe when carbon burns in oxygen?
Exothermic- glow orange when heated strongly
45
Hydrogen+ Oxygen=
Water
46
What are the 4 physical properties of Carbon dioxide?
- Colourless, odourless gas - Slightly soluble in water - Acidic - Denser than air
47
How is Carbon dioxide prepared?
Hydrochloric acid+ Calcium carbonate
48
Calcium carbonate + Hydrochloric acid=
Calcium chloride+ water + CARBON DIOXIDE
49
How can carbon dioxide be collected?
Over water, as it has a low solubility in water
50
What is the test for Carbon dioxide?
- Bubble the gas into limewater | - If limewater turns Milky the gas i carbon dioxide
51
Carbon dioxide(CO2)+ Limewater(Ca(OH)2)
Calcium carbonate(CaCO3)+ water(H2O
52
Carbon dioxide +Water=
Carbonic acid
53
When excess Carbon dioxide is added- Calcium carbonate+ water + carbon dioxide=
Calcium hydrogencarbonate ( Ca(HCO3)2
54
What are 2 uses of carbon dioxide?
- Make drinks FIZZY | - Carbon dioxide fire extinguishers to put out fire
55
How do carbon dioxide fire extinguishers put out fire?
Carbon dioxide is denser than air so it sinks over the flames, pushing out the surrounding oxygen and starving the fire of oxygen
56
Inert?
Unreactive
57
Name a piece of apparatus which would be suitable to collect oxygen gas
Gas Syringe
58
Which 3 elements will form a solid at room temperature?
- Copper, iron and magnesium
59
Which element is the 3rd most abundant gas in the atmosphere?
Argon

Chemistry Aliyya (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions