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St.Olave's Grammar School

AQA C3 Chemistry

Revision Booklet

Please do not write in the booklet.
Return the booklet on book collection day.

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Unit Chemistry 3
At the beginning of each sub-section, activities are stated which develop candidates. skills, knowledge and
understanding of how science works. Details are then given of the substantive contexts in which these skills,
knowledge and understanding should be set. It is
expected that,…

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Compared with the elements in Group 1, transition elements:
- have higher melting points (except for mercury) and higher
- are stronger and harder
- are much less reactive and so do not react as vigorously with
water or oxygen.
Many transition elements have ions with different charges, form…

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The solubility of most solutes that are solids increases as the temperature increases.
A saturated solution is one in which no more solute will dissolve at that temperature. When a hot
saturated solution cools, some of the solute will separate from the solution.
Many gases are soluble in water. Their…

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In an exothermic reaction, the energy released from forming new bonds is greater than the energy needed
to break existing bonds.
In an endothermic reaction, the energy needed to break existing bonds is greater than the energy released
from forming new bonds.
13.5 How do we identify and analyse substances?…

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C­H 413 C­Cl 346 H­N 391 NN 945

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A­Z of elements and the periodic table
To consolidate and crystallise knowledge from the chapter about the periodic table.
Mark each of the following statements true or false by circling the correct letter.
A. Copper and zinc were used in prehistoric times to make bronze. T F
B. An…

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Development of the periodic table
Use a periodic table to help you to answer these questions.
1 Choose elements from the list to match the descriptions (a) to (e).
aluminium astatine bromine caesium chromium fluorine lithium magnesium
(a) A liquid at room temperature with a brown vapour.
(b) A metal…

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4 The table shows the numbers of protons and neutrons in ten different atoms.

Atom A E G J L M Q R T X
Number 9 11 12 17 17 18 19 20 22 24
of protons
Number 10 12 12 18 20 22 20 20 26 28

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KK. Dry HCl gas does not affect universal indicator paper. T F

LL. Dilute hydrochloric acid containing 1 mole of HCl/litre conducts electricity well. T F
+ ­
MM. NH3(g) + H2O NH4 (aq) + OH (aq) T F

NN. 1 mole of ammonia produces 1 mole of OH­ ions…


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