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GCSE Chemistry `Unit 3' written by Applequestria

Table of Contents
Table of Contents
..................................................................................................................................... 1
The early periodic table
........................................................................................................................... 3
Newlands's Law of Octaves:
................................................................................................................ 3
Mendeleev's Periodic Table of Elements:
........................................................................................... 3
The modern periodic table
....................................................................................................................... 4
Trends within the periodic table
.............................................................................................................. 5
The alkali metals…

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................................................................................................................................... 10
Making ammonia (continued)
................................................................................................................ 11
Alcohols
.................................................................................................................................................
12
Methanol, ethanol and propanol:
..................................................................................................... 12
Uses of alcohols:
................................................................................................................................ 12
Carboxylic
acids...................................................................................................................................... 13
Carboxylic acids:
................................................................................................................................ 13
Uses of carboxylic acids:
.................................................................................................................... 13
Esters
.....................................................................................................................................................
14
Esters:
................................................................................................................................................ 14
Uses of esters:
................................................................................................................................... 14
Energy from reactions
............................................................................................................................ 15…

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Energy from reactions (continued)
......................................................................................................... 16
Energy from reactions (continued)
......................................................................................................... 17
Energy bond calculations:
................................................................................................................. 17
Fuel cells:
........................................................................................................................................... 17
Analysing substances
............................................................................................................................. 18
Tests for positive ions
........................................................................................................................ 18
Analysing substances (continued)
.......................................................................................................... 19
Tests for negative
ions....................................................................................................................... 19
Analysing substances (continued)
.......................................................................................................... 20
Use of titration, to…

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The early periodic table
In the nineteenth century, scientists attempted to classify the elements by arranging them in
order of their relative atomic masses (mass number, because atomic number wasn't
discovered until the twentieth century when electrons, protons and neutrons were
discovered). When the elements were listed by arranging them…

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