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C1 Quiz

Leah Firmstone 14 Fragen 1.296 Aufrufe 3,9 (16 Bewertungen)

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Fragen in diesem Quiz (14)

  1. 1Label the pie chart with the names of each element found in air.Bild zu Frage 1
    1. ANitrogen
    2. BOxygen
    3. CArgon and other gases
  2. 2Which gases do today's scientists think the early atmosphere of the Earth was made up of?
    1. Acarbon dioxide
    2. Bwater vapour
    3. Cammonia
    4. Dmethane
  3. 3Four billion years ago the Earth''s atmosphere was hot and much thicker than it is now. Gradually the temperature fell and most of the water vapour condensed, falling as rain and forming the oceans. About 3 billion years ago life began in the form of tiny bacteria-like creatures. They began to use the carbon dioxide from the air and light from the Sun to grow. This process of photosynthesis removed CO2 from the air and produced oxygen as a waste product. Gradually the amount of oxygen in the air increased and animals evolved that were able to breathe the oxygen.
    1. ARichtig
    2. BFalsch
  4. 4Which processes removed carbon dioxide from the air to leave the composition as it is today?
    1. APhotosynthesis
    2. BRespiration
    3. CDissolving into oceans
  5. 5Particulates are tiny bits of solid that float in the air.
    Choose a natural source of particulates.
    1. Avolcanoes
    2. Bdeforestation
    3. Cburning fossil fuels
  6. 6What is a pollutant?
    1. AA substance that is harmful to health or the environment and which is produced by human activity.
    2. BThe end result of a chemical reaction.
  7. 7Which of the following shows an example of a positive correlation?
    1. AWhere the amount of pollutants in the air from burning fossil fuels is high there are more deaths from asthma, and heart and lung diseases.
    2. BThe higher the levels of smog, the lower the air quality.
  8. 8Choose the correct equation for the combustion of a hydrocarbon in air.
    1. Ahydrocarbon + oxygen -> carbon dioxide + water (+energy)
    2. Bhydrocarbon + oxygen -> carbon + water (+ energy)
    3. Chydrocarbon + oxygen -> carbon dioxide (+energy)
  9. 9An oxidation reaction is a reaction where oxygen is lost.
    1. ARichtig
    2. BFalsch
  10. 10Mass is never lost or gained in chemical reactions. We say that mass is always conserved. In other words, the total mass at the end of the reaction is equal to the total mass of the reactants at the beginning.
    1. ARichtig
    2. BFalsch

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Beschreibung
GCSE Chemistry Quiz am C1 Quiz, erstellt von Leah Firmstone am 29/10/2015.
Sprache
English
Aufrufe
1.296
Bewertung
3,9 von 5 · 16 Bewertungen
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