Chemistry Unit 2

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What type of lattice does ionic bonding make?
Giant, regular lattice
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Do they have high or low melting/boiling points?
High
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When do they conduct electricity?
When molten or in solution
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What forms ionic bonds?
Metal + Non-metal
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Does simple molecular covalent bonding have high/low melting/boiling points?
Low
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Does it conduct electricity?
No
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Name two physical properties of Giant Covalent structures
They have high melting/boiling points and do not conduct electricity
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Name three Giant covalent structures
Diamonds, Graphite and Silicon Dioxide
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How many bonds does one atom have in a diamond structure?
4
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How many bonds does one atom have in a Graphite structure?
3
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Describe the molecular structure of graphite
Weak inter molecular forces between layers that can slide with 1 delocalised electron on each atom
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Can graphite conduct electricity?
Yes
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Name properties of metallic bonding
Good conductor of heat/electricity and high melt/boil pnts, layer sliding- malleable
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How big are nanoparticles?
1-100nanometres / a few hundred atoms
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Name 4 uses of nanoparticles.
Deodorant, building materials, catalysts, computer chips
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Describe the structure of thermosoftening polymers
No crosslinks, weak intermolecular forces, easily melted
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How are gases separated in gas chromatography?
They are moved by a carrier gas through a column and move a different speeds so have a different retention time
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How does a Mass Spectrometer work?
Sample is ionised, put through a magnetic field and a Spectra is produced
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What does a Spectra tell you?
The Relative Formula Mass of the sample
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How do you find the Mr on a Spectra?
Find the peak with the highest mass
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What does Acid + Metal produce?
Salt + Hydrogen
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What does Acid + Metal Oxide produce?
Salt + Water
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What does Acid + Metal Hydroxide produce?
Salt + Water
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What does Acid + Alkali produce?
Salt + Water
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What does Acid + Metal Carbonate produce?
Salt + Water + Carbon Dioxide
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How do you produce a fertiliser?
Ammonia + Acid
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What is produce when you add NaOH to Iron II?
Green Precipitate
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What is produce when you add NaOH to Aluminium?
White Precipitate which redissolves in exces NaOH
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What is produce when you add NaOH to Iron III?
Brown Precipitate
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What is produce when you add NaOH to Copper?
Blue Precipitate
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What is produce when you add NaOH to Calcium?
White Precipitate
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What is produce when you add NaOH to Magnesium?
White Precipitate
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What is produce when you add AgNO3 to Chlorine?
White Precipitate
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What is produce when you add AgNO3 to Bromine?
Cream solution
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What is produce when you add AgNO3 to Iodine?
Yellow solution
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What colour does Lithium turn when burned?
Crimson
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What colour does Sodium turn when burned?
Yellow
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What colour does Potassium turn when burned?
Lilac
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What colour does Calcium turn when burned?
Red
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What colour does Barium turn when burned?
Green
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What colour does Copper turn when burned?
Blue/ Green
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How do you test for Sulphate?
Add HCl, water and BaCl2 - acid + white precipitate
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How do you test for Carbonate?
Add HCl, collect gas and bubble through limewater - produces white precipitate
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Other cards in this set

Card 2

Front

Do they have high or low melting/boiling points?

Back

High

Card 3

Front

When do they conduct electricity?

Back

Preview of the front of card 3

Card 4

Front

What forms ionic bonds?

Back

Preview of the front of card 4

Card 5

Front

Does simple molecular covalent bonding have high/low melting/boiling points?

Back

Preview of the front of card 5
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