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AQA C2F Chemistry Specimin
AQA C2F Chemistry Specimin key facts
17
Science
Not Applicable
05/17/2009

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Cards

Term
Diamond is used for cutting tools because it is ......
Definition
hard
Term
Copper can be used for electrical wiring becasue it has ..........
Definition
Delocalised electrons
Term
Graphite can be used in pencils because  it has ........ that slide over each other
Definition
layers
Term
In the Haber process nitrogen from the ............ is reacted with hydrogen from ................
Definition

air

methane

Term
Nitrogen and hydrogen are passed over a hot catalyst made of........
Definition
iron
Term
How is ammonia gas turned into a liquid?
Definition
it is cooled
Term
How is the rate of reaction in the Haber process increaced?
Definition

high temperature

high pressure

using a catalyst

Term

ammonia + ____________ acid --> ammonium nitrate + water

Definition
nitric acid
Term
How does the company save money on raw materials?
Definition
by recycling the unused nitrogen and hydrogen
Term
What is ammonium nitrate used for?
Definition
fertiliser
Term
A reaction that gives out heat is called .......
Definition
exothermic
Term
a reaction that takes in heat from its surroundings is called.........
Definition
endothermic
Term
What is the formula of the compund formed when Na+ ions react with CO32- ions
Definition
Na2CO3
Term
When chorine forms an ions will it gain or loose an electron
Definition
gain an electron
Term
Give three explanations for the increace in rate of reaction when the temperature is increaced
Definition

any three from:

particles gain energy

move faster

collide more often

collide with more force

Term

What is the relative formula mass of CaCO3

(C=12,Ca=40,O=16)

Definition

 

40 + 12 + (3x16) = 100

Term
What is the percentage calcium in CaCO3
Definition

 

40 / 100 x 100 = 40%

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