GCSE Chemistry C6- OCR 21st century Science Printable revision cards

These revision cards should cover everything you need to know for the C6 OCR 21st Century Science syllabus. If you want to print them, you'll have to fold each card where the blue line in the middle is and glue it down. You can then use it to test yourself on the questions. I recommend going through the cards once before you revise and put the cards into two piles; Know, and Need to revise. Then go through and learn the cards in the Need to revise pile. I hope these are as useful for you as they were to me. Good luck! :)

This link (that I give all credit to studydoctor.co.uk) has a brilliant explanation of how to calculate the purity: Titration and purity

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  • Created by: fay
  • Created on: 19-01-13 21:27

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Slide 1

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What are bulk What are fine What are speciality
chemicals? chemicals? chemicals?
Bulk chemicals are Fine chemicals are Speciality chemicals are
chemicals sold on a scale of chemicals made on a chemicals made for specific
thousands or millions of smaller scale, for example uses, such as food
tonnes a year, for example pesticides. additives.
sulphuric acid.…read more

Slide 2

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What are organic Acids + Metals? Acids +
acids? Oxides/Hydroxides
Organic acids are Acids react with metals to Acids react with oxides
molecules consisting of produce a salt and and hydroxides to
carbon, hydrogen and hydrogen. produce a salt and water.
oxygen (carboxylic acids).…read more

Slide 3

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Acids + Carbonates Acids contain what Alkalis contain what
? ions? ions?
Acids react with Acids form hydrogen ions Alkalis form hydroxide
carbonates to produce a when they dissolve in ions when they dissolve in
salt, carbon dioxide and water. water.
water.…read more

Slide 4

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Describe what What is the equation How can rates of
happens during for the rate of reaction be measured?
neutralisation. reaction?
When an acid neutralizes ·Collecting and measuring a
Rate of reaction = change
an alkali to produce a salt gas product
in volume
and water, the H+ ions ·Measuring the loss of mass
change in
react with the OH- ions to as a gas forms
make H2O. ·Timing how long it takes
for a small amount of solid
reactant to disappear
·Timing how long it takes
for a solution to turn cloudy…read more

Slide 5

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Factors that affect What is the collision What are catalysts?
rates of reaction? theory?
·The concentration of Collision theory is the Catalysts are chemicals
reactants theory that when molecules that speed up a reaction
·The surface area of collide, some bonds are but are not used.
solids broken while others are
·The temperature made.
·Catalysts…read more

Slide 6

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Sodium ion Potassium ion Silver ion
Na+ K+ Ag+…read more

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Slide 10

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