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WJEC CBAC
AS/A LEVEL GCE in
Chemistry
REVISION AID
UNIT 1

Page 3

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Page 4

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AS
UNIT CH1 ­ Controlling and Using Chemical Changes (in order to make things,
produce energy and solve environmental problems)
Preamble This unit begins with some important fundamental ideas about atoms and the
use of the mole concept in calculations.
Three key principles governing chemical change are then studied, viz.…

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UNIT CH1 Controlling and Using Chemical Changes (in order to make things, produce
energy and solve environmental problems)
TOPIC 1
1.1 Basic ideas about atoms
1.2 Chemical calculations
TOPIC 2
2.1 Chemical eqilibria and acid-base reactions
2.2 Energetics
2.3 Kinetics
TOPIC 3

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1.1 Basic ideas about atoms
Topic 1.1 (a)
Learning Outcome: Describe electrons, protons and neutrons in terms of their relative
charges and masses, and the distribution of charges and masses within atoms.
Atomic Structure.
Atoms are made up of three fundamental particles, the proton, the neutron and the
electron.
The…

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Page 10

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Topic 1.1 (b)
Learning Outcome: understand the terms atomic number, mass number and
isotope, and the connection between atomic numbers and mass numbers.
The number of protons in the nucleus of an atom is called the atomic number (Z).
Each element has its own atomic number.
For example hydrogen has…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
WJEC CBAC
AS/A LEVEL GCE in
Chemistry
REVISION AID
UNIT 1

Page 3

Preview of page 3

Page 4

Preview of page 4

AS
UNIT CH1 ­ Controlling and Using Chemical Changes (in order to make things,
produce energy and solve environmental problems)
Preamble This unit begins with some important fundamental ideas about atoms and the
use of the mole concept in calculations.
Three key principles governing chemical change are then studied, viz.…

Page 5

Preview of page 5

Page 6

Preview of page 6

UNIT CH1 Controlling and Using Chemical Changes (in order to make things, produce
energy and solve environmental problems)
TOPIC 1
1.1 Basic ideas about atoms
1.2 Chemical calculations
TOPIC 2
2.1 Chemical eqilibria and acid-base reactions
2.2 Energetics
2.3 Kinetics
TOPIC 3

Page 7

Preview of page 7

Page 8

Preview of page 8
1.1 Basic ideas about atoms
Topic 1.1 (a)
Learning Outcome: Describe electrons, protons and neutrons in terms of their relative
charges and masses, and the distribution of charges and masses within atoms.
Atomic Structure.
Atoms are made up of three fundamental particles, the proton, the neutron and the
electron.
The…

Page 9

Preview of page 9

Page 10

Preview of page 10
Topic 1.1 (b)
Learning Outcome: understand the terms atomic number, mass number and
isotope, and the connection between atomic numbers and mass numbers.
The number of protons in the nucleus of an atom is called the atomic number (Z).
Each element has its own atomic number.
For example hydrogen has…

Comments

No comments have yet been made