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GCSE EDEXCEL COMBINED SCIENCE
CC5 & CC6 & CC7
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Cards (42)
What is an
anion
?
Negatively
charged
ion.
What is a
cation
?
Positively
charged ion.
What does
electrostatic force
refer to?
It is the force of attraction between
oppositely charged
particles and repulsion between like charges.
What is an
ion
?
An atom or group of atoms with an
electrical charge
.
How do
atoms
become
positively
or
negatively
charged ions?
Atoms become positively charged ions if they lose
electrons
and negatively charged if they gain electrons.
What is an
ionic bond
?
It is a strong
electrostatic
force of attraction between oppositely charged
ions
.
What are
crystals
?
Solids made up of a regular repeated pattern of
atoms
,
molecules
, or
ions
.
What defines an
ionic compound
?
A substance containing
ions
formed by the loss and gain of
electrons
between two or more elements.
What is a
lattice structure
?
A regular grid-like repeating arrangement of particles such as
atoms
, molecules, or
ions
.
What are
polyatomic ions
?
A group of atoms that have a positive or negative charge due to the loss or gain of
electrons
.
What is an
anode
?
The positive
electrode
.
What is an
aqueous solution
?
A solution in which water is the
solvent
.
What is a
cathode
?
The negative
electrode
.
What is a
dot and cross diagram
used for?
To explain what happens when a
bond
is formed, using dots and crosses to represent the
electrons
of different atoms.
What is a
double bond
?
The bond formed when two pairs of
electrons
are shared between the same two atoms.
What are
electrostatic forces
?
Forces of attraction between
oppositely charged
particles
and forces of repulsion between particles with the same charge.
What does the term
molecular
refer to?
Substances that are made up of
molecules
.
What is a
molecular formula
?
It shows the actual number of
atoms
of each
element
that
combine
to make a molecule of a
substance
.
What is a
molecule
?
A group of
two
or more atoms joined together by
covalent bonds
.
What is the outer
electron shell
?
The electron shell that contains electrons furthest away from the
nucleus
.
What is
valency
?
The
number
of
covalent
bonds formed by an
atom
or the
charge
number of the
ion
formed by an atom.
What is a
bond
?
A force that holds some
atoms
tightly together.
What is a
compound
?
A substance that contains atoms of more than one
element
chemically
joined together with bonds.
What is a
covalent bond
?
The bond formed when a pair of electrons is shared between two
atoms
.
What is a
covalent
, simple molecular structure?
Two or more atoms
covalently
bonded together to form a
distinct
unit.
What is an
element
?
A simple substance made up of only one type of
atom
.
What is an
intermolecular
force
?
A weak force of attraction between molecules.
What is a
monomer
?
A small, simple molecule that can be joined in a chain to form a
polymer
.
What is
poly(ethene)
?
A common polymer made of
ethane
monomers.
What is a
polymer
?
A long-chain molecule made by joining many smaller molecules (
monomers
) together.
What are
allotropes
?
Different structural forms of the same
element
.
What is a
covalent
,
giant molecular
structure?
A three-dimensional lattice of
carbon
atoms linked by covalent bonds.
What is a
delocalised
electron
?
An electron that is free to move and can carry an electrical current.
What is
fullerene
?
A simple molecule in which each
carbon
atom is covalently bonded to three other carbon atoms.
What is
graphene
?
An
allotrope
of
carbon
consisting of a sheet that is one atom thick.
What is a
lubricant
?
A substance placed between two moving surfaces to reduce
friction
.
What does
electrical conductivity
refer to?
Allowing
electricity
to pass through.
What is a
lattice
?
An arrangement of many
atoms
or other particles that are bonded together in a fixed regular pattern.
What does
malleable
mean?
A substance that can be hammered or rolled into shape without
shattering
.
What is
metallic bonding
?
The type of bonding found in metals, characterized by
positively charged
ions in a 'sea' of
negatively charged
electrons.
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