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GCSE Chemistry `Unit 1a' written by Applequestria

Table of Contents
Table of Contents
..................................................................................................................................... 1
Atoms
...................................................................................................................................................... 2
The periodic table
.................................................................................................................................... 3
Chemical reactions
................................................................................................................................... 3
Calcium carbonate
................................................................................................................................... 4
Calcium carbonate (continued)
................................................................................................................ 5
Extracting metals
..................................................................................................................................... 6
Extracting metals (continued)
.................................................................................................................. 7
Properties and uses of metals…

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Atoms
All substances are made of atoms. A substance that is made of only one sort of atom is called
an element. There are about one hundred different known elements. Elements are shown in the
periodic table. The groups contain elements with similar properties. Atoms of each element are
represented…

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The periodic table
Elements in the same group in the periodic table have the same number of electrons in their
highest energy level (outer electrons) and this gives them similar chemical properties.
· For example, the alkali metals of group one all have one electron in their highest energy levels.…

Page 7

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+ 2H
2

O Balanced symbol equation for the reaction
between sulphuric acid and sodium hydroxide forming sodium sulphate and water. HNO
3

+ NaOH NaNO
3

+H
2

O Balanced symbol equation for the reaction
between nitric acid and sodium hydroxide forming sodium nitrate and water.
3

Page 8

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Page 9

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Calcium carbonate
Limestone, mainly composed of the compound calcium carbonate (CaCO
3

), is quarried and can be
used as building material. For example, old buildings such as cathedrals are often made from
limestone blocks.
· Limestone is mainly composed of the compound calcium carbonate (CaCO
3

).
· Calcium…

Page 10

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· Calcium carbonate thermally decomposes to produce calcium oxide and carbon dioxide.
· Calcium oxide reacts with water to produce calcium hydroxide, which is an alkali that can be
used in the neutralisation of acids. For example, it can be used in the neutralisation of acidic soil
in fields. Calcium…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
GCSE Chemistry `Unit 1a' written by Applequestria

Table of Contents
Table of Contents
..................................................................................................................................... 1
Atoms
...................................................................................................................................................... 2
The periodic table
.................................................................................................................................... 3
Chemical reactions
................................................................................................................................... 3
Calcium carbonate
................................................................................................................................... 4
Calcium carbonate (continued)
................................................................................................................ 5
Extracting metals
..................................................................................................................................... 6
Extracting metals (continued)
.................................................................................................................. 7
Properties and uses of metals…

Page 3

Preview of page 3

Page 4

Preview of page 4
Atoms
All substances are made of atoms. A substance that is made of only one sort of atom is called
an element. There are about one hundred different known elements. Elements are shown in the
periodic table. The groups contain elements with similar properties. Atoms of each element are
represented…

Page 5

Preview of page 5

Page 6

Preview of page 6
The periodic table
Elements in the same group in the periodic table have the same number of electrons in their
highest energy level (outer electrons) and this gives them similar chemical properties.
· For example, the alkali metals of group one all have one electron in their highest energy levels.…

Page 7

Preview of page 7
+ 2H
2

O Balanced symbol equation for the reaction
between sulphuric acid and sodium hydroxide forming sodium sulphate and water. HNO
3

+ NaOH NaNO
3

+H
2

O Balanced symbol equation for the reaction
between nitric acid and sodium hydroxide forming sodium nitrate and water.
3

Page 8

Preview of page 8

Page 9

Preview of page 9
Calcium carbonate
Limestone, mainly composed of the compound calcium carbonate (CaCO
3

), is quarried and can be
used as building material. For example, old buildings such as cathedrals are often made from
limestone blocks.
· Limestone is mainly composed of the compound calcium carbonate (CaCO
3

).
· Calcium…

Page 10

Preview of page 10
· Calcium carbonate thermally decomposes to produce calcium oxide and carbon dioxide.
· Calcium oxide reacts with water to produce calcium hydroxide, which is an alkali that can be
used in the neutralisation of acids. For example, it can be used in the neutralisation of acidic soil
in fields. Calcium…

Comments

No comments have yet been made