How metals and nonmetals combine to form compounds with unique and very different properties.
- An electrically charged atom is called an ion.
- Ionic bonds are very strong.
- Ions are formed when electrons are added or removed from the outer shell.
- Ionic compounds have high melting and boiling points.
This is sodium. Just touching water, it produces flames.
And this greenish gas is chlorine, so poisonous it's been used in chemical warfare.
But when chemically bonded together, these two dangerous elements sodium and chlorine form something that looks entirely unlike either of the elements from which it's made.
It's relatively harmless ...
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