AQA GCSE Chemistry Unit 2

hey i think this covers most of C2, if ive missed anything off or made any mistakes please let me know!

hope this helps, good luck!

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  • Created by: A-Gracie
  • Created on: 22-05-11 16:36
what is an isotope?
an element wiht the same number of protons but a different number of neutrons
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what are electron shells also known as?
energy levels
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how does ionic bonding work?
atoms lose/gain electrons to form charged particles so that the atoms have a full outer shell of electrons
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what is the difference between giant ionic structures and giant covalent structure?
ionic structures contain charged ions and covalent structures dont
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what is one nanometre equivalent to in metres?
1 nm=0.000000001 m
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how do you find out the number of moles in something?
mass in g/Mr
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what is atom economy?
the percentage of reactants which have become useful products
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what is 'collision theory'?
the idea that the factors that affect the rate of reaction do so as they increase the number of succesful collisions in a reaction
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do catalysts work better with a small or large surface area?
large
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in an exothermic reaction, is heat given out or taken in?
given out
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what are the industrial conditions used for producing ammonia?
200 atmospheres, 450 degrees celsius, iron catalyst
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what does an acid form when reacted in water?
H+ (aq) ions
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what is the name given to the following reaction: acid + base --> salt + water ?
neutralisation
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what is the correct reaction for reacting acids with metals?
acid + metal --> salt + hydrogen
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what is the correct reaction for reacting acids with metal oxides/hydroxides?
acid + metal oxide/hydroxide --> salt + water
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what are the positive ions called in electrolysis?
cations
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Other cards in this set

Card 2

Front

what are electron shells also known as?

Back

energy levels

Card 3

Front

how does ionic bonding work?

Back

Preview of the front of card 3

Card 4

Front

what is the difference between giant ionic structures and giant covalent structure?

Back

Preview of the front of card 4

Card 5

Front

what is one nanometre equivalent to in metres?

Back

Preview of the front of card 5
View more cards

Comments

Megan (:

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(:

Sam Ellis

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Very impressive and useful, thank you!

Ayman Ilham

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I'm the first one to get full marks on this quiz! :D

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