Covalent Binding Properties, More Diamond And Graphite Drawing Covalent Compounds

Front 1

list the properties of covalent bonding

Back 1

covalent bonds are very strong bonds and require lots of energy to break them
the puter electrons are shared in pairs
they are non metals only
tend tohave very high melting and boiling points
dont conduct heat or electricity except graphite

Front 2

what is a giant covalent structure

Back 2

strong bonds throughout the structure

Front 3

list 4 propeties of diamond

Back 3

hardest known natural structure
each carbon in the structure forms 4strong covalent bonds with 4 more carbons
3550°c melting point - covalent bonds throughout structure
4830°c boiling point - ""
doesnt conduct electricity or heat - no free electrons

Front 4

list The next 4 propeties of diamond

Back 4

very stiff material - not compressable
can be coloured
very valuable
used for jewellery and drills (tips) and in industry (cutting)

Front 5

list 4 properties of graphite

Back 5

soft and slippery
grey in colour (metallic rock)
each carbon in the structure forms3 strong covalent bonds with 3 more carbon atoms. the forth electron is delocalised and is found inbetween the layers
boiling point 3237°c no liquid phase -sublimes

Front 6

list 2 more properties of graphite

Back 6

It conducts electricity(in a circuit) because the delocalised electrons can move
used in pencil (mix with clay) and as a lubricant in industry

Front 7

what are diamond and graphite

Back 7

diamond + graphite + (buckminsterfullerene c-60) are all allotropes (different forms of the same element) of carbon

Front 8

draw a diagram of why graphite conducts electricity

Back 8

Front 9

why does graphite conduct electricity

Back 9

It can conduct because of its bonding and structure each carbon covalently bonds with 3 more carbons

Front 10

state why the symbol for a molecule of chlorine is Cl2

Back 10

The 2 chlorine atoms combine together to form a chlorine molecule, there are2 cloudiness atoms together,both gain full shells by combining so their symbol becomes Cl2

Front 11

state 3 features of a door and cross diagrams

Back 11

The dot represents the electron/s in the shells

Front 12

explain why a molecule of methane had no overall electrical charge

Back 12

All of the electrical changes are balanced so almost cancel each other out leaving no extra electrical charge so methane is known as having discrete molecules- no overall electrical charge

Front 13

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Back 13

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