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AQA (9-1) Chemistry Only Paper 1

https:// revisechemistry.uk 11 perguntas 3.553 visualizações Atualizado em 17 abr 2019

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Perguntas do quiz (11)

  1. 1Which of the following statements about fuel cells is false?
    1. AWater is the only product
    2. BThey will operate continuously
    3. CThey produce electricity
    4. DThey convert electricity into heat
  2. 2Which of the following are advantages of fuel cells?
    1. ADirect energy transfer
    2. BLess pollutants
    3. CNo recharge limit
    4. DHydrogen is a gas
    5. EHydrogen is explosive
    6. FHydrogen is produced from fossil fuels, or electrolysis
  3. 3The overall reaction in a hydrogen fuel cell involves the oxidation of hydrogen to produce water.
    1. AVerdadeiro
    2. BFalso
  4. 4Simple chemical cells work because the metals used have different reactivities.
    1. AVerdadeiro
    2. BFalso
  5. 5If a reaction should produce 50 g of product, but only produces 42 g, calculate the percentage yield (2 s.f.): [blank_start]84[blank_end]%
    1. A84
  6. 6What is the atom economy for this reaction, where hydrogen is the desired product (give your answer to 2 s.f.)? [blank_start]2.0[blank_end]%Imagem da pergunta 6
    1. A2.0
  7. 7The pathway chosen for a product depends on factors such as (select all that apply):
    1. Apercentage yield
    2. Batom economy
    3. Crate of reaction
    4. Dequilibrium position
    5. Eusefulness of by-products
    6. Fability to transport products
  8. 8When completing a titration, you will have multiple readings which you need to calculate an average reading for.
    It is important that the titres you include in your calculation are [blank_start]concordant[blank_end].
    1. Aconcordant
  9. 9Which of the following is not a worry of nanoparticles?
    1. Apeople are concerned the small size of nanoparticles makes it possible to breathe them in, or to pass into cells
    2. Binside the body, they might catalyse reactions that are harmful producing toxic substances
    3. Cmodern nanoparticulate materials have not been used for long, so it is difficult for scientists to determine their risks
    4. Dindividual particles (nanoparticulate) of titanium dioxide have no colour and cannot be seen when it is spread on skin
  10. 10Compared to other metals, most transition metals have the general properties of:
    1. Ahigher melting points
    2. Blower densities
    3. Cgreater strength
    4. Dlower hardness
    5. Eform coloured compounds
    6. Fhave catalytic activity

Informações

Descrição
GCSE Chemistry (AQA) Quiz sobre AQA (9-1) Chemistry Only Paper 1, criado por https:// revisechemistry.uk em 16-04-2019.
Idioma
English
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3.553
Histórico
Criado em 16 abr 2019 · atualizado em 17 abr 2019
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