Year 7 Science
Course 2
Term 4: Chemistry
Text: Oxford Science 7
Year 7 Chemistry Content Descriptions
1.1. Chemical sciences
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Mixtures, including solutions, contain a combination of pure substances that can be separated using a range of techniques(ACSSU113)
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recognising the differences between pure substances and mixtures and identifying examples of each
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identifying the solvent and solute in solutions
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investigating and using a range of physical separation techniques such as filtration, decantation, evaporation, crystallisation,
chromatography and distillation
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exploring and comparing separation methods used in the home
1.2. Earth and space sciences
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Some of Earth’s resources are renewable, including water that cycles through the environment, but others are nonrenewable(ACSSU116)
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considering what is meant by the term ‘renewable’ in relation to the Earth’s resources
considering timescales for regeneration of resources
comparing renewable and non-renewable energy sources, including how they are used in a range of situations
considering the water cycle in terms of changes of state of water
investigating factors that influence the water cycle in nature
exploring how human management of water impacts on the water cycle
Week
1
Topic
Renewable vs
non-renewable
resources
Content
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3
Soil as a
resource
Investigation
Physical
properties
Mixtures
Assessments and Homework
Resources on Earth are renewable or non-renewable
resources
Know examples of common renewable and nonrenewable resources
Look at Australia’s primary energy sources and whether
they are renewable or not.
Look the timescales for the regeneration of resources
Understand why resources need to be carefully manages
Soil as one of our most important resources
Understand the causes of dryland salinity
Investigate the impact of salt on seed germination
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Oxford Science 4.1
Oxford Science 4.2
O.S.7 – p.63, q.1-6
O.S. 4.1 worksheet
O.S. 4.2 worksheet
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Effect of salt on seed
germination investigation
scaffold
Oxford Science 4.5
O.S. 4.5 worksheet
 O.S.7 – p.73, q.1-5
Study skills: Collect data and
represent it in tables.
Annotate data whilst
conducting experiments.
Understand that physical properties are the
characteristics of a substance which you can determine
without destroying it or changing it into something new
 Physical properties include melting point, boiling point,
hardness, whether it is magnetic, whether it can dissolve
in water, its ability to conduct electricity and heat
 Different substances have different physical properties
 Know the names of the difference state changes and
what is meant by boiling point and freezing point.
 Understand the difference between mixtures and pure
substances
 Mixtures are a combination of two or more substances
The physical properties of a mixture are dependent on the
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O.S. 2.1 worksheet
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2
Activities and Resources
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Oxford Science 2.1
O.S.7 – p.65, q.1-6
O.S.7 – p.31, q.1-5
substances involved
4
Solubility and
solutions
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Factors affecting 
solubility
5
Solutions and
concentration
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Separating
mixtures
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Filtration
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A solution is a solute dissolved in a solvent
Understand what the words soluble, insoluble,
suspension and solution mean
Be able to recognise if a mixture is a solution or
suspension
Understand how to increase the solubility of a substancemixing, heating, surface area
Identify the solute and solvent in a solution
Understand that concentration is a measure of the
amount of solute dissolved in a given volume of solvent.
Concentration is measured in g/mL.
Understand what is meant by the term supersaturated
Physical properties can be used to separate mixtures
Mixtures can be separated according to their physical
properties/size and mass
Magnets can be used to remove magnetic objects from
mixtures
Sedimentation, flotation and decantation can be used to
separate insoluble substances from solutions
Centrifugation can be used to speed up the process of
sedimentation
Filtration can be used to separate soluble and insoluble
substances in solution
Understand that soluble substances will pass through the
filter paper
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Soluble or insoluble
worksheet
Oxford Science 2.2
O.S. 2.2 worksheet
Validation
Dissolving and surface area
Temperature and surface
area
O.S.7 – p.33, q.1-7
Supersaturated solution
demonstration
Skills lab 2.3A Oxford
Science- separation using
magnetic properties
Skills lab 2.3B Oxford
Science – separation using
sedimentation and flotation
O.S.7 – p.35, q.1-6
O.S. 2.3 worksheet
Skills lab 2.4 Oxford
Science – Filtering a
mixture of sand and water
Pearson activity book 4.8
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O.S.7 – p.37, q.1-6
6
Crystallisation
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Know what the terms filtrate and residue mean
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Understand that crystallisation separates substances
based on their boiling points
Types of mixture
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Distillation
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Chromatography 
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7
Combining
separation
techniques
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Water
purification
8
Water cycle
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Understand the difference between crystallisation and
distillation
Understand the purpose of the condenser.
Understand that chromatography separates substances
based on solubility
Chromatography can be used to identify which soluble
substances are present in a mixture by comparing
unknown samples to known samples
Understand that multiple separation techniques can be
used to separate mixtures containing more than 2
substances
Design an experiment to separate salt, water, iron filings
and sand.
Carry out experiment and separate the 4 substances.
Work out the amount of salt recovered from the
separation process
Understand that the water purification process involves
using various separation techniques
Waste water is a mixture that can be separated
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Water cycles in the environment
Understand the process by which water is recycled
through the water cycle
Factors in nature affecting the water cycle.
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Skills lab 2.4 Oxford
science – Crystallisation of
salt water
Crystallisation and
distillation worksheet
Distillation demo
O.S. 2.4 worksheet
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Skill lab 2.6 Oxford Science
– who wrote the nasty note?
O.S.7 – p.41, q.1-6
O.S. 2.6 worksheet
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O.S.7 – p.43, q.1-5
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Oxford Science 2.7
O.S. 2.7 worksheet
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Oxford Science 3.2
Oxford Science 3.3
O.S.7 – p.51, q.1-5
O.S. 3.2 worksheet
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O.S.7 – p.39, q.1-4
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O.S.7 – p.53, q.1-5
Exam revision
9
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Investigate human impacts on the water cycle
Investigate the ways in which humans can protect natural
water resources – sustainable water use at home
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Exams
Semester 2 Exam
Study skills: Use graphic
organisers (Venn Diagram,
Mind maps, Flow charts,
Brainstorms) to organise test
notes.
Assessments
Week
Type
4
Investigation
9
Exam
Name
Effect of salt on plant growth
investigation
Semester 2 Exam
Weighting
5%
25%