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18 Cards in this Set
- Front
- Back
what happens in ionic bonding.. |
it is the transfer of electrons, Losing or gaining electrons - to form positively or negatively charged ions. |
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ionic compounds form in a similar way.. |
a dot and cross diagram shows what happens to the electrons with ionic bonds |
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what type of structure does a ionic compound have.. |
a lattice arrangement. Ions are closely packed together = as the ionic bonds are very strong electrostatic forces of attraction |
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an example of a ionic compound.. |
sodium chloride or magnesium oxide |
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why do the ionic compounds sodium chloride and magnesium oxide - have similar properties .. |
Have high melting and boiling points = very strong bonds between the ions - takes a lot of energy to break. they conduct electricity in a dissolved solution - the ions are free to move, same happens when they melt |
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when TWO different elements combine the compounds ending is -IDE- |
eg : sodium and chlorine = sodium chloride |
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when THREE or more elements combine - the compounds end in -ATE- |
copper, sulfur and oxygen = copper sulfate |
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common salts of, sodium, potassium and ammonium are... |
soluble in water |
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nitrates are.. |
soluble |
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common chlorides, expect lead and silver are.. |
soluble |
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common sulfates, expect lead, barium and calcium sulfate... |
soluble |
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common carbonates and hydroxides, except sodium, potassium and ammonium .. |
insoluble |
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what can barium sulfate be used for.. |
goes on bones when you have an x-ray |
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flame tests.. |
some metals give a flame a characteristic colour |
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sodium ions give a.. |
yellow/orangey flame |
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Potassium ions give a .. |
lilac purple flame |
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Calcium ions give a.. |
brick-red flame |
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Copper ions.. |
blue-green flame |