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Chemistry
C2.1
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Created by
Jess C.
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Cards (13)
What else can a pure substance be?
A
single
compound
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What is one of the simplest ways to determine if a substance is pure?
Measure
its
melting
and
boiling
points
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At what does a pure substance melt?
A
specific
fixed
temperature
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What kind of boiling point does a pure substance have?
A
specific
fixed
boiling
point
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How can you tell if water is pure based on its melting and boiling points?
They are at
specific
fixed
temperatures
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What happens to the melting and boiling points of a mixture?
They occur over a
range
of
temperatures
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What does a pure substance consist of?
Only a
single
element
or
compound
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What is a formulation?
A
complex
mixture
designed
as a
product
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What is carefully measured in a formulation?
The
quantity
of each
component
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Why is the quantity of each component carefully measured in a formulation?
So the
product
has
desired
properties
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Formula for relative formula mass?
relative atomic mass
added together
Does diamond have delocalised electrons?
No, meaning it cannot conduct
electricity
.
Does graphite have delocalised electrons?
Yes it has one delocalised electron, which moves freely around the structure meaning it conduct
electricity
.
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