chemistry - 1

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properties of ionic compoounds are................
- high melting and boiling points - conducts electricity when molten or in solution
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sodium chloride........
consists of a gaint lattice held together by electrostatic forces of attraction between the positive + negative ions. The strong electrostatic forces are ionic bonds.
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the pure solid salt from a precipatate reaction can be seprated byy.......
filtering the mixture, washing the solid residue in the filter paper with distilled water and drying the solid in a warm oven.
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how do we test chloride ions??
dilute nitric acid and silver nitrate are added the a solution of the ionic substance. if the ionic substance contains chloride ions a white precipatate will form.
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idetifing cardonate ions?
carbonates react with dilute acids to produce carbon dioxide.so, if the unknown substance is a carbonate it releases carbon dioxide when dilute acid is added. the co2 can be identified by testing with limewater
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sodiums flame colour?
yellow
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potassiums flame colour?
lilac
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caliums flame colour?
brick-red
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coppers flame colour?
blue-green.a
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ionic bonding?
sharing of electrons to become chemically stable
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ionic bonding occurs between?
metal and non-metals
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why do compounds have high melting points?
the strong electrostatic forces of attraction that hold them together.
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why do they conduct electricity?
because the charged ions are free to move between the electrodes and act as a current
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Card 2

Front

sodium chloride........

Back

consists of a gaint lattice held together by electrostatic forces of attraction between the positive + negative ions. The strong electrostatic forces are ionic bonds.

Card 3

Front

the pure solid salt from a precipatate reaction can be seprated byy.......

Back

Preview of the front of card 3

Card 4

Front

how do we test chloride ions??

Back

Preview of the front of card 4

Card 5

Front

idetifing cardonate ions?

Back

Preview of the front of card 5
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