Lola222
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What would've a six mark answer for limestone
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Deb Thompson
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(Original post by Lola222)
What would've a six mark answer for limestone
Hey Lola, if there was a 6 mark question on limestone it would most likely be asking what the cycle is and the uses for each product on the cycle and it may possibly ask for the chemical symbols for each.

The main points to answer this with would be:
- Calcium carbonate (CaCo3) is used for building materials (Mortar, cement, concrete, and glass)
- Calcium carbonate decomposes when heated producing CO2 and Calcium oxide (CaO)
- Calcium oxide can be used to neutralise acid soils and lakes
- Calcium oxide is added to a small amount of water to make Calcium hydroxide in a solid state (Ca(OH)2)
- Calcium Hydroxide is also used for neutralising acid soils
- When calcium hydroxide is mixed with more water, it produces calcium hydroxide but in an aqueous state (Dissolved in water) (Ca(OH)2)
- Calcium hydroxide in aqueous state is used for testing for CO2 (It goes cloudy)

Hope that helped, make sure to give me rep if it did
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BrokenToe1
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Will there be anything about ionic and covalent bonding or is that c2? Thanks
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jaebum
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(Original post by BrokenToe1)
Will there be anything about ionic and covalent bonding or is that c2? Thanks
that's c2
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Deb Thompson
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(Original post by BrokenToe1)
Will there be anything about ionic and covalent bonding or is that c2? Thanks
Yes there will be things on ionic and covalent bonding, you can find a list of all of the possible topics here:
http://filestore.aqa.org.uk/subjects...02-W-SP-14.PDF

Hope this cleared things up
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Deb Thompson
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(Original post by jaebum)
that's c2
Actually, it is in C1, for a list of all possible things on the exam, follow the link:
http://filestore.aqa.org.uk/subjects...02-W-SP-14.PDF

Hope this helped you
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AJ2104
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(Original post by BrokenToe1)
Will there be anything about ionic and covalent bonding or is that c2? Thanks
(Original post by jaebum)
that's c2

C1 1.4 - Forming Bonds

Mentions both ionic and covalent bonding.
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jaebum
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(Original post by AJ2104)
C1 1.4 - Forming Bonds

Mentions both ionic and covalent bonding.
ohh okay thank you
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