back to top

Can You Get Through This GCSE Chemistry Test?

Do you know your catalysts from your cations?

Posted on

Ready for some chemistry? Let's go!

journalofscience.tumblr.com

There are 15 questions below, and all but the last one are multiple choice. They're all taken from previous GCSE exam papers.

You can use a periodic table if you need one. At the end of the quiz you'll get a grade in the range from A* to F. Good luck!

  1. 1. The table below shows the characteristics of three different rocks. Which rock is likely to be sedimentary?

    Pearson / qualifications.pearson.com
    A
    B
    C
    Correct!
    Wrong!

    Sedimentary rocks often contain fossils, have layers, and are easily eroded compared to other types of rock.

    Via en.wikipedia.org
  2. 2. When calcium carbonate is heated a lot, it decomposes to calcium oxide and what gas?

    carbon monoxide
    carbon dioxide
    oxygen
    Correct!
    Wrong!

    Here is the full word equation:

    Via Pearson / qualifications.pearson.com
  3. 3. Complete the sentence: "The Earth’s earliest atmosphere is thought to have been formed by..."

    animals breathing
    photosynthesis in plants
    gases from volcanoes
    Correct!
    Wrong!

    This early atmosphere would have been mostly carbon dioxide with very little oxygen.

  4. 4. Complete the sentence: "If a bottle of wine is left open, ethanoic acid is formed when ethanol in the wine is oxidised by..."

    Tap to play GIF Tap to play GIF
    velvet-girlz.tumblr.com
    "... carbon dioxide."
    "... oxygen."
    "... hydrogen."
    Correct!
    Wrong!

    Oxygen causes oxidisation.

  5. 5. Large alkane molecules can be broken down into smaller ones by heating. What is this process called?

    Combustion
    Polymerisation
    Fractional distillation
    Cracking
    Correct!
    Wrong!

    Cracking produces smaller, more useful hydrocarbon molecules.

  6. 6. Which of these is poly(propene)?

    Correct!
    Wrong!

    It's made when propene undergoes polymerisation and is also called polypropylene.

  7. 7. Which of these is a cation?

    Correct!
    Wrong!

    Cations are positively charged.

  8. 8. Which of these sentences correctly explains why an atom has no overall charge?

    It contains more protons than electrons.
    It contains the same number of electrons and protons.
    It contains the same number of electrons and neutrons.
    It contains more neutrons than electrons.
    Correct!
    Wrong!

    Protons have +1 relative charge, electrons have -1, so when you have the same number of each they cancel each other out.

  9. 9. Which of these salts is insoluble in water?

    sodium carbonate
    lead chloride
    magnesium nitrate
    Correct!
    Wrong!

    Lead chloride's solubility in water is very low, so it's generally considered to be insoluble.

  10. 10. Which row of the table below shows the boiling point and ability to conduct electricity of a simple molecular, covalent liquid?

    Pearson / qualifications.pearson.com
    A
    B
    C
    D
    Correct!
    Wrong!

    Simple molecular substances have low boiling and melting points, and don't conduct electricity.

  11. 11. What does a catalyst do?

    It speeds up the rate of a reaction, but is not used up itself.
    It speeds up the rate of the reaction and is chemically changed during the process.
    Correct!
    Wrong!

    A catalyst doesn't undergo a permanent chemical change during the reaction.

  12. 12. Which of these is a use for vinegar?

    Fuel
    Perfume
    Preservative
    Soap
    Correct!
    Wrong!

    The acid in vinegar slows food spoilage.

    Via Thinkstock
  13. 13. If you got a yellow flame in a flame test, which metal ion is likely to be present in your sample?

    en.wikipedia.org
    Calcium, Ca²⁺
    Lithium, Li⁺
    Sodium, Na⁺
    Correct!
    Wrong!

    Sodium produces a bright yellow flame in a flame test.

  14. 14. Which of these options are typical conditions for the Haber process?

    temperature = 200ºC, pressure = 200 atmospheres
    temperature = 450ºC, pressure = 200 atmospheres
    temperature = 450ºC, pressure = 450 atmospheres
    Correct!
    Wrong!

    The Haber process involves combining nitrogen and hydrogen at high temperature and pressure.

  15. 15. What catalyst is used in the Haber process?

    Correct!
    Wrong!

    An iron catalyst is used to speed up the Haber process.

Can You Get Through This GCSE Chemistry Test?

You got an F :(

Sorry, you failed. Why don't you have another go?

You got an F :(
Take quizzes and chill with the BuzzFeed app.
Get the app
You got a D!

You didn't get a very high mark, but at least you passed.

You got a D!
Take quizzes and chill with the BuzzFeed app.
Get the app
You got a C!

Not too bad at all! Well done.

You got a C!
Take quizzes and chill with the BuzzFeed app.
Get the app
You got a B!

Well done!

You got a B!
Take quizzes and chill with the BuzzFeed app.
Get the app
You got an A!

Congrats! You didn't quite make full marks, but you did extremely well indeed.

You got an A!
Take quizzes and chill with the BuzzFeed app.
Get the app
You got an A*!

Top marks! Well done!

You got an A*!
Take quizzes and chill with the BuzzFeed app.
Get the app

Kelly Oakes is science editor for BuzzFeed and is based in London.

Contact Kelly Oakes at kelly.oakes@buzzfeed.com.

Got a confidential tip? Submit it here.

Promoted