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AQA GCSE Chemistry Unit 3 quiz

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A summary quiz on AQA unit 3 chemistry, good for last minute revision
theweeknd
Quiz by theweeknd, updated more than 1 year ago More Less
Gabi Germain
Created by Gabi Germain almost 9 years ago
theweeknd
Copied by theweeknd almost 9 years ago
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Resource summary

Question 1

Question
How did mandeleev overcome the problem of undiscovered elements?
Answer
  • Put them in a seperate groups
  • Leaving spaces
  • Ignoring them

Question 2

Question
How were the early periodic tables arranged?
Answer
  • By proton number
  • By Atomic weight

Question 3

Question
How is the modern periodic table ordered?
Answer
  • Atomic weight
  • Proton number

Question 4

Question
Elements in the same group have the same number of...
Answer
  • Electrons in their outer shell
  • shells or energy levels
  • Protons in the nucleus

Question 5

Question
Characteristics of group 1:
Answer
  • Low density
  • High density
  • React with non metals to form ionic compounds and carry a +1 charge
  • React with non metals to form covalent compounds and carry a +1 charge
  • React with water to release hydrogen
  • form hydroxides that dissolves in water to give alkaline solutions

Question 6

Question
The further up the group 1 the more reactive and lower its melting poit
Answer
  • True
  • False

Question 7

Question
Characteristics of transition elements compared with group1:
Answer
  • higher melting points
  • lower melting points
  • stronger and harder
  • Much less reactive
  • Much more reactive

Question 8

Question
Transition metals are useful catalysts
Answer
  • True
  • False

Question 9

Question
What are group 7 elements known as?
Answer
  • Alkalis
  • Acids
  • Gases
  • Halogens

Question 10

Question
The further down group 7 the less reactive and the higher melting point.
Answer
  • True
  • False

Question 11

Question
A more reactive halogen can displace a less reactive halogen from an..
Answer
  • Aqueous solution of its salt
  • Aqueous solution of its oxide

Question 12

Question
The more energy levels an element has the less reactive it is
Answer
  • True
  • False

Question 13

Question
Hard water can contain..
Answer
  • Magnesium ions
  • Calcium ions
  • Hydrogencarbonate ions (in temporary)
  • barium
  • Berillium

Question 14

Question
Which type of water form a lather readily?
Answer
  • Soft water
  • Hard water

Question 15

Question
There are two types of hard water temporary hard water and permanent hard water
Answer
  • True
  • False

Question 16

Question
Scum is formed by the decomposition of Hydrogencarbonate ions in temporary hard water
Answer
  • True
  • False

Question 17

Question
What are two ways that hardness can be removed?
Answer
  • Exchange columns and adding sodium carbonate
  • Heating it and adding calcium carbonate

Question 18

Question
What are two things that water should have low levels of?
Answer
  • Water
  • Calcium
  • Microbes
  • Dissolved salts

Question 19

Question
Pure water can be produced by distillation
Answer
  • True
  • False

Question 20

Question
What do water filters contain to remove some dissolved substances from water?
Answer
  • Silver, carbon and ion exchange resin
  • Gold, carbon and ion exchange resin

Question 21

Question
Chlorine is added to water to increase microbes and flourine isn't added to improve dental health
Answer
  • True
  • False

Question 22

Question
How is energy released from substances measured?
Answer
  • Calorimetry
  • Titration
  • Electrolysis

Question 23

Question
Why in a chemical reaction should the reagents be mixed in an insulated container?
Answer
  • So less energy escapes to the surroundings
  • So it wont burn the person
  • so none of the substance leaks out

Question 24

Question
During a reaction energy is needed to make bonds and energy is released when breaking bonds
Answer
  • True
  • False

Question 25

Question
Three things to do when drawing an energy diagram:
Answer
  • Show reactants then products
  • Show activation energy
  • Overall energy change
  • Use a red pencil
  • Draw a best fit line
  • Show products then reactants

Question 26

Question
In an exothermic reaction more energy is released to make bonds than break them
Answer
  • True
  • False

Question 27

Question
Catalysts higher the activation energy
Answer
  • True
  • False

Question 28

Question
Tick the 4 true facts:
Answer
  • Lithium has a crimson flame
  • Lithium has a lilac flame
  • Potassium has a lilac flame
  • Barium has a blue flame
  • Barium has a green flame
  • sodium has a yellow flame
  • sodium has an orange flame

Question 29

Question
Aluminium, calcium and magnesium ions form white precipitates
Answer
  • True
  • False

Question 30

Question
What colour precipitate does copper form?
Answer
  • Blue
  • Green
  • Brown

Question 31

Question
What colour precipitate does iron (lll) ions form?
Answer
  • Green
  • Brown
  • Blue

Question 32

Question
What colour precipitate does iron(ll) ions give?
Answer
  • Green
  • Blue
  • Brown

Question 33

Question
Carbonates react with dilute acid to form carbon dioxide
Answer
  • True
  • False

Question 34

Question
Halide ions can be tested by adding what and what then looking at the precipitates?
Answer
  • Silver nitrate solution and dilute nitric acid
  • Silver nitrate solution and hydrochloric acid
  • silver nitrate solution and barium oxide

Question 35

Question
To test sulphate ions add hydrochloric acid and barium chloride solution
Answer
  • True
  • False

Question 36

Question
How can volumes of acid and alkali solutions that react with each other be measured?
Answer
  • Titration
  • Calorimetry
  • Electrolysis scales

Question 37

Question
What are the raw materials in the haber process?
Answer
  • Nitrogen
  • Hydrogen
  • Iron
  • Ammonia

Question 38

Question
What is the temperature and pressure in the haber process?
Answer
  • 200 atmospheres and 450 degrees
  • 450 atmospheres and 200 degrees

Question 39

Question
Ammonia is produced in the haber process
Answer
  • True
  • False

Question 40

Question
Equilibrium is reached when the reactions occur at the same rate in each direction
Answer
  • True
  • False

Question 41

Question
To increase the yield in a reaction that is exothermic in the forward direction what do you do?
Answer
  • Increase the temperature
  • Decrease the temperature

Question 42

Question
What can you do to increase the yield when the forward reaction has more gaseous molecules?
Answer
  • Increase the temperature
  • Decrease the temperature

Question 43

Question
We have to compromise temperature, pressure and rate of reaction in the haber process
Answer
  • True
  • False

Question 44

Question
Which functional group is for alcohols?
Answer
  • -OH
  • -COO-
  • -COOH

Question 45

Question
Which functional group is for esters?
Answer
  • -COO-
  • -OH
  • -COOH

Question 46

Question
What is the functional group for acids?
Answer
  • -COOH
  • -COO-
  • -OH

Question 47

Question
3 characteristics of alcohols:
Answer
  • burn in air
  • don't burn in air
  • React with sodium to produce hydrogen
  • React with sodium to produce carbon dioxide
  • dissolve in water to form a neutral solution

Question 48

Question
Oxidising ethanol makes ethanoic acid
Answer
  • True
  • False

Question 49

Question
4 characteristics of carboxylic acids:
Answer
  • dissolve in water to produce acidic solutions
  • dissolve in water to produce alkali solutions
  • dont ionise completely when dissolved in water so are weak acids
  • ionise completely with water
  • react with alcohols in the presence of an acid to produce esters
  • react with carbonates to produce carbon dioxide
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