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GCSE - Chemistry > c4.1 predicting chemical reactions > Flashcards

c4.1 predicting chemical reactions Flashcards

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1
Q

what is group 1 usually called

A

alkali metals

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2
Q

what do group 1 form with water

A

alkali solutions

alkali metal + water => metal hydroxide + hydrogen

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3
Q

going down group 1

A
  • density increases
  • melting point decreases
  • reactivity increases
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4
Q

what is group 7 called

A

the halogens

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5
Q

what are the physical properties of group 7

A

non-metals
brittle
poor conductors
they exist as diatomic molecules with weak IMF.

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6
Q

what is fluorine at RT

A

pale yellow gas

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7
Q

what is chlorine at RT

A

green gas

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8
Q

what is bromine at RT

A

an orange brown liquid

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9
Q

what is iodine at RT

A

shiny grey- black crystalline solid

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10
Q

going down group 7

A

density increases
melting and boiling points increase
reactivity decreases going down the group

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11
Q

halogen displacement reactions

A 
a halogen can only displace a halide if it is more reactive that the halide. 
So:
Chlorine can displace Bromide and Iodide
Bromine can displace Iodide
Iodide can't displace anything
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12
Q

what is group 8 called

A

the noble gases

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13
Q

trends in group 8

A

they are monatomic (exist as single atoms)

very weak IMF between them

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14
Q

going down group 8…

A
  • IMF get stronger between the atoms
  • boiling points increase
  • density increases
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15
Q

typical properties of transition metals

A

shiny when cut
good conductors of electricity
strong
malleable

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16
Q

compared to the alkali metals, the transition metals are..

A
  • stronger and harder
  • have higher densities
  • have higher melting points
  • also produce colourful ionic compounds
  • can form more than 1 type of ion
  • less reactive
17
Q

metal displacement reactions

A

more reactive metals can displace less reactive metals

18
Q

covalent bonds occur between

A

non-metals only

19
Q

ionic bonds occur between

A

metals and non-metals

20
Q

metals is groups 1 and 2 are…

A

more reactive than transition metals
and
become more reactive down the group

GCSE - Chemistry (33 decks)

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