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GCSE Chemistry Paper 1
Metallic Bonding
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Created by
Dzhem Rizov
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Cards (26)
What type of bonding occurs when a metal atom reacts with a non-metal atom?
Ionic bonding
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What is the bonding between two non-metal atoms called?
Covalent
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What kind of structure do metals consist of?
Giant
structure
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How are atoms arranged in metals?
In
regular
layers
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What are the outer electrons in a metal described as?
Delocalised
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In which energy level of atoms are the delocalized electrons found?
Outer energy level
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Are the outer electrons in metals strongly attached to any individual atom?
No
, they are
not
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What term is used to describe the delocalized electrons in metals?
Sea of electrons
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What is the movement of outer electrons like in metals?
Free to move through the
structure
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After a metal atom loses its outer electrons, how is it referred to?
Positive metal ions
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What type of attraction exists between the positive metal ions and the sea of delocalised negative electrons?
Strong
electrostatic attraction
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What is electrostatic attraction?
Attraction between
positive
and
negative
objects
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What is the electrostatic attraction in metals called?
Metallic bond
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Why do metals have high melting and boiling points?
Metallic bonds
are strong
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Why do strong metallic bonds result in high melting and boiling points?
It requires a lot of
energy
to break them
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How do moving electrons contribute to the thermal conductivity of metals?
They can carry
thermal energy
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Why can metals be bent and shaped?
Layers
of atoms can slide
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What problem exists with some pure metals regarding their hardness?
Not hard enough to be
useful
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How are metals hardened?
By making an
alloy
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What is an alloy?
A mixture of
metals
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How does the different size of atoms in an alloy affect its hardness?
It
distorts
the
layers
making
it
harder
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How do alloys compare to pure metals in terms of hardness?
Alloys are
harder
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What is the name for the attraction between positive metal ions and delocalized electrons?
Metallic bonding
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What property of metals is a direct result of the moving electrons carrying thermal energy?
Thermal conductivity
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What does the ability of layers of atoms to slide over each other allow metals to do?
Be
bent and shaped
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How does distorting the layers in alloys prevent the layers from sliding over each other?
The
irregular
atoms block movement
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