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Chemistry
Paper 1
Metallic bonding
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Created by
Gloria Yiga
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Cards (18)
What type of bonding occurs
between
metal
atoms?
Metallic
bonding
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What characteristic properties arise from metallic bonding?
Strength
,
high
melting
and
boiling
points
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What happens to outer shell electrons in metallic bonding?
They are shared among all
atoms
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What are
delocalized
electrons?
Electrons
that can move freely in
metals
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What holds the
metallic
structure
together?
Electrostatic attraction between positive ions and negative electrons
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Why do metals have high melting and boiling points?
Due to strong
metallic bonds
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Why are metals good conductors of electricity and heat?
Delocalized electrons can carry an electrical charge and thermal energy
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What does malleable mean in relation to metals?
Can
be
bent
or
hammered
into
shapes
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Why can layers of metal atoms
slide
over one another?
Due to their
regular structure
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What is an alloy?
A mixture of two or more
elements
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How are alloys made?
By mixing different
metals
or a metal and
non-metal
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Why do different sized atoms in alloys make them harder?
They disrupt the regular structure so layers can no longer slide over eachother
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What is steel primarily made of?
Iron
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Why is steel used in cars and planes?
It
provides
necessary strength
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What are the properties of metals due to metallic bonding?
High
melting
and
boiling
points
Good conductors of electricity and heat
Malleable and ductile
Strong due to
electrostatic attraction
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How do alloys differ from pure metals?
Alloys contain two or more
elements
Different sized
atoms
disrupt regular structure
Alloys are generally harder than pure metals
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What does the
electrostatic attraction
hold?
Everything together in a
regular structure
Why is steel harder than a pure metal?
-
Steel
is an
alloy
meaning it contains 2 or more different
elements
-this means that elements have differently sized
atoms
-this disrupts the regular
structure
-
layers
cannot slide over each other