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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
Gabi Germain
Quiz por Gabi Germain, atualizado more than 1 year ago
Gabi Germain
Criado por Gabi Germain mais de 9 anos atrás
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Resumo de Recurso

Questão 1

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

Questão 2

Questão
How were the early periodic tables arranged?
Responda
  • By proton number
  • By Atomic weight

Questão 3

Questão
How is the modern periodic table ordered?
Responda
  • Atomic weight
  • Proton number

Questão 4

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

Questão 5

Questão
Characteristics of group 1:
Responda
  • 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

Questão 6

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

Questão 7

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

Questão 8

Questão
Transition metals are useful catalysts
Responda
  • True
  • False

Questão 9

Questão
What are group 7 elements known as?
Responda
  • Alkalis
  • Acids
  • Gases
  • Halogens

Questão 10

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

Questão 11

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

Questão 12

Questão
The more energy levels an element has the less reactive it is
Responda
  • True
  • False

Questão 13

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

Questão 14

Questão
Which type of water form a lather readily?
Responda
  • Soft water
  • Hard water

Questão 15

Questão
There are two types of hard water temporary hard water and permanent hard water
Responda
  • True
  • False

Questão 16

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

Questão 17

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

Questão 18

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

Questão 19

Questão
Pure water can be produced by distillation
Responda
  • True
  • False

Questão 20

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

Questão 21

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

Questão 22

Questão
How is energy released from substances measured?
Responda
  • Calorimetry
  • Titration
  • Electrolysis

Questão 23

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

Questão 24

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

Questão 25

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

Questão 26

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

Questão 27

Questão
Catalysts higher the activation energy
Responda
  • True
  • False

Questão 28

Questão
Tick the 4 true facts:
Responda
  • 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

Questão 29

Questão
Aluminium, calcium and magnesium ions form white precipitates
Responda
  • True
  • False

Questão 30

Questão
What colour precipitate does copper form?
Responda
  • Blue
  • Green
  • Brown

Questão 31

Questão
What colour precipitate does iron (lll) ions form?
Responda
  • Green
  • Brown
  • Blue

Questão 32

Questão
What colour precipitate does iron(ll) ions give?
Responda
  • Green
  • Blue
  • Brown

Questão 33

Questão
Carbonates react with dilute acid to form carbon dioxide
Responda
  • True
  • False

Questão 34

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

Questão 35

Questão
To test sulphate ions add hydrochloric acid and barium chloride solution
Responda
  • True
  • False

Questão 36

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

Questão 37

Questão
What are the raw materials in the haber process?
Responda
  • Nitrogen
  • Hydrogen
  • Iron
  • Ammonia

Questão 38

Questão
What is the temperature and pressure in the haber process?
Responda
  • 200 atmospheres and 450 degrees
  • 450 atmospheres and 200 degrees

Questão 39

Questão
Ammonia is produced in the haber process
Responda
  • True
  • False

Questão 40

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

Questão 41

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

Questão 42

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

Questão 43

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

Questão 44

Questão
Which functional group is for alcohols?
Responda
  • -OH
  • -COO-
  • -COOH

Questão 45

Questão
Which functional group is for esters?
Responda
  • -COO-
  • -OH
  • -COOH

Questão 46

Questão
What is the functional group for acids?
Responda
  • -COOH
  • -COO-
  • -OH

Questão 47

Questão
3 characteristics of alcohols:
Responda
  • 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

Questão 48

Questão
Oxidising ethanol makes ethanoic acid
Responda
  • True
  • False

Questão 49

Questão
4 characteristics of carboxylic acids:
Responda
  • 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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