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Atoms that lose their valence electrons to another atom, the valence electrons are transferred from one atom to another. This allows both atoms to become stable
When an atom loses an electron it loses a negative charge and becomes a positive ion. When an atom gains an electron, it gains a negative charge and becomes a negative ion
Polyatomic ions: Ions that are made up of more than one type of atom
Can have a positive or a negative charge
Ionic bonds form as a result of the attraction between positive and negative ions
A compound that consists of positive and negative ions is called an ionic compound
◦When Ionic compounds form, the ions come together in a way that balances out the charges on the ions. The chemical formula for a compound reflects this balance
Chemical Formula’s and names
◦Ionic compounds are usually hard, brittle, crystals that have high melting points. When dissolved in water or melted, they conduct electricity
◦Sodium Chloride Sodium Hydroxide
Properties of Ionic Compounds
◦When you heat a substance its energy increases, therefore the ions have enough energy to overcome(break) the bonds that join them, and it melts into a liquid Ibuprofen MP
A solid ionic crystal will not conduct electricity, however, a melted or dissolved crystal will conduct