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Science 7 5-2
Question | Answer |
---|---|
ion | atom with electric charge |
polyatomic ions | ions made of more than one atom |
positive ion | loses electron |
negative ion | gains electron |
ionic bond | attraction between oppositely charged ions |
ionic compound | compound of positive and negative ions |
ionic compound properties | crystal shape, high melting points, conduct electricity |
subscript | tells you the ratio of elements in the compound |
high melting points of ion compounds | due to lots of energy needed to break strong ionic bonds |
ionic compounds dissolved in water | ionic bonds break and ions move freely and conduct electricity |