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S2 Chem Revision Flashcards | StudBud
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S2 Chem Revision
S2 Chem Revision
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A #quiz recapping N3/N4 Unit 1 #chemistry
Flashcards
30 cards
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Questions
30
Answers
1
In chemistry, an indicator
Shows when a chemical reaction is finished
Reacts with an acid but not an alkali
Reacts with an alkali but not an acid
Turns one colour in acid and a different colour in alkali
2
This symbol shows that a chemical is
Toxic
Flammable
Corrosive
Radioactive
3
Which of these elements is a liquid at room temperature?
Uranium
Calcium
Germanium
Mercury
4
Name the chemical when lithium reacts with oxygen
Lithium dioxide
Lithium oxide
Lithiumhydroxide
OxyLithide
5
Sodium chloride is made using sodium and which acid?
Hydrochloric acid
Sulfuric acid
Stannic acid
Oxyacid
6
Acid rain is caused by
Using electric cars
Nuclear power plants
The burning of fossil fuels like coal
The burning of hydrogen in fuel cells
7
Which of these elements is the
least
reactive?
Bromine
Lithium
Argon
Hydrogen
8
The pH of water is
3
7
1
12
9
This symbol shows that a chemical is
Flammable
Explosive
Corrosive
Radioactive
10
Which of these gases is most abundant in the Earth's atmosphere
Carbon dioxide
Water vapour
Oxygen
Nitrogen
11
Which of the following is
not
a way to increase the speed of a reaction?
Decrease temperature
Decrease particle size
Increase concentration
Increase temperature
12
Air is
A mixture of different gases
A compound made of different gases
An element
Mainly oxygen
13
Complete the word equation for neutralisation. Acid + Alkali --> water +
Salt
Hydrogen
Sugar
Carbon dioxide
14
What is always produced during the reaction of an acid and an alkali?
A salt and carbon dioxide
A salt and water
Carbon dioxide and water
A salt and carbon dioxide
15
What was the final volume of gas produced in this reaction?
20 cm3
30 cm3
25 cm3
15 cm3
16
Oxygen is a gas
True
False
17
How can you slow down a reaction?
Add more reactants
Place it in an ice bath
Take away the product
Heat it with a bunsen
18
How can water be removed from the reaction of an acid and alkali to recover the salt?
By electrolysis to make a metal
By adding excess acid
By heating the solution to cause evaporation
By freezing the solution
19
According to environmental groups, May was an extraordinary month for Scotland
Having sunshine
Producing wind power
Consuming Irn Bru
Selling shortbread
20
A substance with a pH of 1 is
Catalytic
Neutral
An alkali
An acid
21
Protons have a negative charge
True
False
22
What is the name of the unreactive group (8)
Noble Gases
Alkali Metals
Oxides
Halogens
23
Which of the following is
not
a chemical reaction?
Super glue setting
Ice melting
Frying an egg
A match burning
24
When toothpaste is used to clean your teeth,
The acid in the toothpaste neutralises alkali in your mouth
Extra alkali is added to kill bacteria
The alkali in the toothpaste neutralises acid in your mouth
Extra acid is added to kill bacteria
25
Which of these elements is named after a planet?
Neptunium
Tantalum
Tungsten
Vanadium
26
Approximately how many chemical elements are there as of 2017?
94
118
102
85
27
At what time did the reaction end?
58 seconds
50 seconds
70 seconds
The reaction has not finished yet
28
Electrons have a mass of 1
False
True
29
What type of solutions have a pH above 7?
Acid
Neutral
Electrolytes
Alkali
30
Which of these is the same group as lithium
Oxygen
Lithium oxide
Sodium
Magnesium
