GCSE C2 CHEMISTRY ADDITIONAL EDEXCEL QUIZ

This resource doesn't cover one specific topic or the whole of C2. I have made flash cards (not electronically) and when filtering through them I have made this quiz to help me remember all the flash cards I didn't know. Please don't take this as a staple revision source - this only has a few random pieces from different topic areas.

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How do you test for sulfate ions?
Adding HCl and barium chloride solution. If a white precipitate forms it contains sulfate ions. The precipitate will be barium sulfate.
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How do you test for a carbonate?
Add a dilute acid. If the gas produced bubbles off, test with limewater. If the limewater turns cloudy it contains CO2, meaning the carbonate is confirmed.
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How do you test for chloride ions?
Add silver nitrate, if a precipitate forms it contains chloride ions.
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What can be used to detect the presence of individual elements?
Emission Spectroscopy
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What do dot and cross diagrams show?
Covalent bonds
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Which forces are strong in covalent bonds and which are weak?
Strong forces between the atoms of the molecules, weak forces between the molecules
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Most simple molecular substances don't dissolve in water - with exception to.... ?
Sugar (sucrose)
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Why does graphite conduct electricity?
The electrons in the weak bonds between the layers of graphite can move when a voltage is put across them.
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How do scientists use chromatography to identify colourless substances like amino acids and sugars>
Spraying the paper with a locating reagent which reacts with the invisible spots to produce a colour
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What is the equation for chromatography?
distance traveled by component / distance traveled by solvent
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Define 'simple molecular covalent compounds'
Small molecules consisting of only non-metallic atoms
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Define 'giant molecular covalent compounds'
Large structure with many non-metallic atoms held together with covalent bonds
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Chemical structure of metals
A regular arrangement of positive metal ions surrounded by a sea of delocalised electrons
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Why are metal ions malleable?
The layers of positive ions can slide over eachother in the sea of electrons
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Why are metals able to conduct electricity?
Because the delocalised electrons can move when a voltage is applied
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What group are alkali metals in?
1
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What state (s,l,g,aq) and colour is FLUORINE at room temp?
gas, pale yellow
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Colour of halide ions
Colourless
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Other cards in this set

Card 2

Front

How do you test for a carbonate?

Back

Add a dilute acid. If the gas produced bubbles off, test with limewater. If the limewater turns cloudy it contains CO2, meaning the carbonate is confirmed.

Card 3

Front

How do you test for chloride ions?

Back

Preview of the front of card 3

Card 4

Front

What can be used to detect the presence of individual elements?

Back

Preview of the front of card 4

Card 5

Front

What do dot and cross diagrams show?

Back

Preview of the front of card 5
View more cards

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