Test
AQA GCSE Chemistry Unit 3 quiz
Preguntas del test (49)
1How did mandeleev overcome the problem of undiscovered elements?
- APut them in a seperate groups
- BLeaving spaces
- CIgnoring them
2How were the early periodic tables arranged?
- ABy proton number
- BBy Atomic weight
3How is the modern periodic table ordered?
- AAtomic weight
- BProton number
4Elements in the same group have the same number of...
- AElectrons in their outer shell
- Bshells or energy levels
- CProtons in the nucleus
5Characteristics of group 1:
- ALow density
- BHigh density
- CReact with non metals to form ionic compounds and carry a +1 charge
- DReact with non metals to form covalent compounds and carry a +1 charge
- EReact with water to release hydrogen
- Fform hydroxides that dissolves in water to give alkaline solutions
6The further up the group 1 the more reactive and lower its melting poit
- AVerdadero
- BFalso
7Characteristics of transition elements compared with group1:
- Ahigher melting points
- Blower melting points
- Cstronger and harder
- DMuch less reactive
- EMuch more reactive
8Transition metals are useful catalysts
- AVerdadero
- BFalso
9What are group 7 elements known as?
- AAlkalis
- BAcids
- CGases
- DHalogens
10The further down group 7 the less reactive and the higher melting point.
- AVerdadero
- BFalso
11A more reactive halogen can displace a less reactive halogen from an..
- AAqueous solution of its salt
- BAqueous solution of its oxide
12The more energy levels an element has the less reactive it is
- AVerdadero
- BFalso
13Hard water can contain..
- AMagnesium ions
- BCalcium ions
- CHydrogencarbonate ions (in temporary)
- Dbarium
- EBerillium
14Which type of water form a lather readily?
- ASoft water
- BHard water
15There are two types of hard water temporary hard water and permanent hard water
- AVerdadero
- BFalso
16Scum is formed by the decomposition of Hydrogencarbonate ions in temporary hard water
- AVerdadero
- BFalso
17What are two ways that hardness can be removed?
- AExchange columns and adding sodium carbonate
- BHeating it and adding calcium carbonate
18What are two things that water should have low levels of?
- AWater
- BCalcium
- CMicrobes
- DDissolved salts
19Pure water can be produced by distillation
- AVerdadero
- BFalso
20What do water filters contain to remove some dissolved substances from water?
- ASilver, carbon and ion exchange resin
- BGold, carbon and ion exchange resin
21Chlorine is added to water to increase microbes and flourine isn't added to improve dental health
- AVerdadero
- BFalso
22How is energy released from substances measured?
- ACalorimetry
- BTitration
- CElectrolysis
23Why in a chemical reaction should the reagents be mixed in an insulated container?
- ASo less energy escapes to the surroundings
- BSo it wont burn the person
- Cso none of the substance leaks out
24During a reaction energy is needed to make bonds and energy is released when breaking bonds
- AVerdadero
- BFalso
25Three things to do when drawing an energy diagram:
- AShow reactants then products
- BShow activation energy
- COverall energy change
- DUse a red pencil
- EDraw a best fit line
- FShow products then reactants
26In an exothermic reaction more energy is released to make bonds than break them
- AVerdadero
- BFalso
27Catalysts higher the activation energy
- AVerdadero
- BFalso
28Tick the 4 true facts:
- ALithium has a crimson flame
- BLithium has a lilac flame
- CPotassium has a lilac flame
- DBarium has a blue flame
- EBarium has a green flame
- Fsodium has a yellow flame
- Gsodium has an orange flame
29Aluminium, calcium and magnesium ions form white precipitates
- AVerdadero
- BFalso
30What colour precipitate does copper form?
- ABlue
- BGreen
- CBrown
31What colour precipitate does iron (lll) ions form?
- AGreen
- BBrown
- CBlue
32What colour precipitate does iron(ll) ions give?
- AGreen
- BBlue
- CBrown
33Carbonates react with dilute acid to form carbon dioxide
- AVerdadero
- BFalso
34Halide ions can be tested by adding what and what then looking at the precipitates?
- ASilver nitrate solution and dilute nitric acid
- BSilver nitrate solution and hydrochloric acid
- Csilver nitrate solution and barium oxide
35To test sulphate ions add hydrochloric acid and barium chloride solution
- AVerdadero
- BFalso
36How can volumes of acid and alkali solutions that react with each other be measured?
- ATitration
- BCalorimetry
- CElectrolysis scales
37What are the raw materials in the haber process?
- ANitrogen
- BHydrogen
- CIron
- DAmmonia
38What is the temperature and pressure in the haber process?
- A200 atmospheres and 450 degrees
- B450 atmospheres and 200 degrees
39Ammonia is produced in the haber process
- AVerdadero
- BFalso
40Equilibrium is reached when the reactions occur at the same rate in each direction
- AVerdadero
- BFalso
41To increase the yield in a reaction that is exothermic in the forward direction what do you do?
- AIncrease the temperature
- BDecrease the temperature
42What can you do to increase the yield when the forward reaction has more gaseous molecules?
- AIncrease the temperature
- BDecrease the temperature
43We have to compromise temperature, pressure and rate of reaction in the haber process
- AVerdadero
- BFalso
44Which functional group is for alcohols?
- A-OH
- B-COO-
- C-COOH
45Which functional group is for esters?
- A-COO-
- B-OH
- C-COOH
46What is the functional group for acids?
- A-COOH
- B-COO-
- C-OH
473 characteristics of alcohols:
- Aburn in air
- Bdon't burn in air
- CReact with sodium to produce hydrogen
- DReact with sodium to produce carbon dioxide
- Edissolve in water to form a neutral solution
48Oxidising ethanol makes ethanoic acid
- AVerdadero
- BFalso
494 characteristics of carboxylic acids:
- Adissolve in water to produce acidic solutions
- Bdissolve in water to produce alkali solutions
- Cdont ionise completely when dissolved in water so are weak acids
- Dionise completely with water
- Ereact with alcohols in the presence of an acid to produce esters
- Freact with carbonates to produce carbon dioxide
Información
- Descripción
- A summary quiz on AQA unit 3 chemistry, good for last minute revision
- Autor
- Gabi Germain
- Idioma
- English
- Visitas
- 760
- Historial
- Creado el 26 abr 2015 · actualizado el 6 abr 2018
- Etiquetas
- Valoración
- 4,7 de 5 · 6 valoraciones Valora este test