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end of year chemistry
topic 2 periodic table
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group 1
end of year chemistry > topic 2 periodic table
15 cards
halogens
end of year chemistry > topic 2 periodic table
11 cards
metals and non-metals
end of year chemistry > topic 2 periodic table
20 cards
the periodic table
end of year chemistry > topic 2 periodic table
4 cards
Cards (76)
what number pages to revise for halogens
10-15
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what are they in elemental form
toxic
,
smelly
and crumbly when solid
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colour of flourine
green gas
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colour of chlorine
green yellow gas
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colour of bromine
reddish brown
liquid
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iodine
grey solid that becomes
purple
when gas
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astatine
black
solid
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what is it called when halogens react with certain metals
metal halides
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give an example
sodium chloride
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what are group ones also called
alkali metals
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are these reactive and why
they are because they only have one electron
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give a consequence for them being so reactive
theyre usually
metal oxides
because they bond to
oxygen
for stablilty
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transition metals
are used more in
everyday life
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giev some trends of transition metals
harder
,
stronger
,
higher
melting points,
often
coloured
compounds,
higher
densities,
less
reactive,
good conductor of
heat
and
electricity
,
dont vigorously react with
oxygen
or
water
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what can they be used for
pottery
and
ornaments
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do they all form the same charges
no
, they all have
different
charges
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they make great
catalysts..
,. meaning
they increase the rate of a chemical
reaction
by creating a more accessible pathway requiring less
energy.
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balanced equation for sodium reacting with oxygen
4Na+O2
-->
2Na20
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balanced equation for sodium reacting with water
2Na + H20 -->
2NaOH
+
H2
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balanced equation for sodium reacting with chlorine
2Na
+
Cl2
--> 2NaCl
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are group 7 monotomic or diatomic
yes
, including
hydrogen
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halogens
happily join with what
metals
group
1
metals as their charges of
1+
and 1- are balanced
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why are transition metals used more irl
theyre more
practical
and pretty. they also have relatively
low
reactivity
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what is a characteristic about ions in transition metals
theyre
ions
with
different charges
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properties of ionic compounds
they all form
crystals
, high melting and boiling points, hard and brittle, conduct electricity well when dissolved in water, when solid theyre good
insulators.
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how to calculate rfm
adding the
relative atomic masses.
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