Compounds are made when atoms of two or more elements are chemically combined together.
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What are isotopes?
Isotopes are different forms of the same element, which have the same number of protons but a different number of neutrons.
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What is ionic bonding?
Atoms lose or gain electrons to form charged particles (ions).
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What structure do ionic compounds have?
The ions have a regular lattice arrangement. There are very strong electrostatic forces of attraction between oppositely charged ions in all directions.
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What are the properties of ionic compounds?
High melting point, high boiling point, easily dissolved in water.
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