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GCSE chemistry
Paper 1
Transition metals and nano particles
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Cards (28)
where are transition metals
found?
Middle
of the
periodic table
Melting point of transition metals
Relatively
high
Density of transition metals
Relatively
high
Strength of transition metals
Relatively
high
Durability of transition metals
Relatively
high
Reactivity with oxygen,water and
halogens
of
transition
metals
Slow
or not at all
Melting point of group 1 metals
Relatively
low
Density of group 1 metals
Relatively
low
Strength of group 1 metals
Relatively
low
Durability of group 1 metals
Relatively
low
Reactivity with oxygen. Water and halogens of group 1 metals
Easy
Uses of transition metals
Catalysts-increase
rate of
reaction
without being used up
What do transition metals form ?
Coloured
compounds and many differently charged ions
What do group 1 metals form ?
1+ ions
What do group 2 metals form ?
2+
ions
measuring
particles
coarse particles=10micrometres=1*10^-5m
fine particles=100nm=1*10^-7m
nanoparticles=1 to 100nm=1*10^-9 to 1*10^
-7m
Bulk
Property of something that is
great
in
magnitude
Calculating surface area-to-volume ratio
1.Find
total
surface area
2.calculate
volume
3.Write in
ratio
format
4.Divide total surface are by
volume
Nano
particles
Different
properties
to bulk materials of same substance caused by
high
surface area-to-volume
ratio
making them more reactive
used in healthcare ,electronics ,cosmetics and as catalysts
potentially hazardous to health and eco systems
Catalysts
Speed
up
reactions
without being used up
Charge
Property of a body which experiences force in an
electrical field
Density
Measure how compact a substance is
Particulate
matter
Another
way of measuring very
small
particles
Name
metals in group 1
Lithium
,sodium ,
potassium
Reactivity
series
Potassium
sodium
lithium
Calcium
magnesium
aliminium
Carbon
zinc
iron
hydrogen
copper
silver
gold
Independent variable
Variable that cannot be
changed
by other variables
Dependent
variable
Variable that
depends
on the
value
of another
Control variable
Remains
constant