C2

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High strength in tension is a good property for a material used to make:
Rope
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The property of lasting a long time before wearing out is know as:
durability.
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Rubber is a good material for making wellington boots because it is:
waterproof
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Data is more reliable if it can be
repeated.
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To find the hardness of different types of rubber the depth a steel ball can be pushed into each rubber sample is measured. In this investigation the size of the steel ball must be:
constant
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In a good experimental design one factor is varied and all of the others are:
controlled
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Most of the molecules in crude oil are:
hydrocarbons.
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Most of the fractions from crude oil are used as:
fuels
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Joining small molecules to make long chains is called:
polymerisation.
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Why is uPVC a better material for window frames than wood?
is more durable.
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What is needed to break the forces between particles in a solid?
Energy
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A solid has a high melting point if the forces between its particles are:
large.
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Increasing the chain length of a polymer makes it:
less flexible.
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To make a polymer softer and more flexible we can add:
plasticiser
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Cross linking the chains makes a polymer:
harder.
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Increasing the crystallinity of a polymer increases the:
melting point
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The life cycle assessment for a product will be different if we:
use a different material.
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A wooden window frame may have less environmental impact than a uPVC window frame because it...
is more sustainable
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The life cycle assessment for a material will be different for each...
product
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When using a life cycle assessment a scientific approach can be used to address:
some questions
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In the context of a life cycle assessment, the benefits are:
for some but not others
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Using the Earth's resources in a way that allows them to keep being used in the future is:
sustainable.
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Scientific reseach and applications are controlled by:
Scientific research
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In the context of a life cycle assessment not all of the things that should be done are:
feasible
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In the context of a life cycle assessment different courses of action may be taken because of different…
social situations.
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Other cards in this set

Card 2

Front

The property of lasting a long time before wearing out is know as:

Back

durability.

Card 3

Front

Rubber is a good material for making wellington boots because it is:

Back

Preview of the front of card 3

Card 4

Front

Data is more reliable if it can be

Back

Preview of the front of card 4

Card 5

Front

To find the hardness of different types of rubber the depth a steel ball can be pushed into each rubber sample is measured. In this investigation the size of the steel ball must be:

Back

Preview of the front of card 5
View more cards

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