Chemical Classification
- Created by: parahood
- Created on: 26-02-15 19:12
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- chemical classification
- ionic substances
- bonding
- atoms gain or lose electrons to form ions
- strong bonds between ions
- electricity
- conduct when molten or dissolved in water
- ions can move around
- don't conduct when solid
- conduct when molten or dissolved in water
- melting and boiling points
- high
- strong forces holding ions together
- solid at room temp
- high
- solubility
- many dissolve in water
- bonding
- simple molecular substances
- bonding
- atoms share electrons to gain full outer shell
- strong bonds between atoms in molecules
- weak forces between separate molecules
- electricity
- dont conduct
- no charged particles that can move
- dont conduct
- melting and boiling points
- low
- weak forces of attration between molecules
- most are liquid or gas at room temp
- low
- solubility
- some dissolve in water
- bonding
- giant molecular covalent substances
- bonding
- atoms share electrons to gain full outer shell
- strong bonds between all atoms
- melting and boiling points
- high
- strong forces between atoms
- solids at room temp
- high
- bonding
- metals
- bonding
- positive ions held together by sea of delocalised electrons
- strength is different in different meals
- electricity
- conduct
- when solid and liquid
- delocalised electrons can move between ions
- conduct
- melting and boliing points
- medium to high
- all metals are solids at room temp
- insoluble
- bonding
- classifying substances
- melting point
- liquid or gas = simple molecular covalant substance
- if a substance is solid, heat on a bunsen
- substance melts easily = simple molecular covalent
- substance takes longer to melt = metal or giant molecular covakent substance
- cannot be melted = giant ionic substance
- conducting electricity
- use battery bulb and wires
- if it conducts electricity = metal or graphite
- doesn't conduct then dissolve in water
- if it dissolves and conducts = ionic substance
- use battery bulb and wires
- melting point
- ionic substances
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