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EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]

Brief History of Periodic Table
· Until quite recently, there were only two ways of categorising elements:
o Their physical and chemical properties o Their relative atomic mass
· In 1864, John Newlands tried to arrange the elements with…

Page 3

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nucleus. An extra electron is less easily attracted into the outer shell, so elements lower
down the group are LESS reactive.
·
Overleafisthemodernperiodictable...

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Page 5

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EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]

Group 1 (The Alkali Metals)
· They are all silvery solids.
· Their hydroxides dissolve in water to give an alkaline solution.
· As you go down Group 1, the alkali metals become:
o Bigger atoms o More reactive…

Page 6

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Page 7

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EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]

Group 7 (The Halogens)
· As you go down Group 7, the halogens become:
o Less reactive o Higher melting point o Higher boiling point
· They are all non-metals with coloured vapours:
o Fluorine: very reactive poisonous yellow…

Page 8

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3+
e.g.Fe

· Compounds are usually very colourful.
· Transition metals and their compounds make good catalysts.

Acids and Alkalis
· Remember from Unit 2 that:
o When
acids
Page 3333 of 14141414 2 + , C
r

dissolve in water they produce
h y d r o g e…

Page 9

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Page 10

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EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]
· Lowry and Brønsted made things a bit more general. They said that:
Acids release H+ ions ­ i.e. they are proton donors. Bases accept H+ ions
­ i.e. they are proton acceptors.
· The ideas of Lowry and…

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Pages in this set

Page 1

Preview of page 1

Page 2

Preview of page 2
EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]

Brief History of Periodic Table
· Until quite recently, there were only two ways of categorising elements:
o Their physical and chemical properties o Their relative atomic mass
· In 1864, John Newlands tried to arrange the elements with…

Page 3

Preview of page 3
nucleus. An extra electron is less easily attracted into the outer shell, so elements lower
down the group are LESS reactive.
·
Overleafisthemodernperiodictable...

Page 4

Preview of page 4

Page 5

Preview of page 5
EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]

Group 1 (The Alkali Metals)
· They are all silvery solids.
· Their hydroxides dissolve in water to give an alkaline solution.
· As you go down Group 1, the alkali metals become:
o Bigger atoms o More reactive…

Page 6

Preview of page 6

Page 7

Preview of page 7
EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]

Group 7 (The Halogens)
· As you go down Group 7, the halogens become:
o Less reactive o Higher melting point o Higher boiling point
· They are all non-metals with coloured vapours:
o Fluorine: very reactive poisonous yellow…

Page 8

Preview of page 8
3+
e.g.Fe

· Compounds are usually very colourful.
· Transition metals and their compounds make good catalysts.

Acids and Alkalis
· Remember from Unit 2 that:
o When
acids
Page 3333 of 14141414 2 + , C
r

dissolve in water they produce
h y d r o g e…

Page 9

Preview of page 9

Page 10

Preview of page 10
EXAM 4th Jun 09 @ 9am [CHEMISTRY UNIT 3 REVISION NOTES]
· Lowry and Brønsted made things a bit more general. They said that:
Acids release H+ ions ­ i.e. they are proton donors. Bases accept H+ ions
­ i.e. they are proton acceptors.
· The ideas of Lowry and…

Comments

No comments have yet been made