miércoles, 30 de octubre de 2013

The properties of materials


Why do ionic compounds dissolve in water?
Because the oxygen in water molecules is electronegative, so when ionic compounds are mixed in it, the molecules are easily pulled apart as they're both charged.

Why do covalent compounds dissolve in acetone (a covalent compound)?
Because acetone is non-polar, as well covalent compounds. Non-polar substances dissolve other non polar substances.

Why do metals conduct electricity?
The metallic bond allows electrons to move freely between the atoms, this allows electricity to be transferred.

Why do covalent compounds NOT conduct electricity?
In order for electricity to be transferred, there must be a charged part that can move freely in the compound. There's no charge in covalent compounds.

Why do ionic compounds have such a high boiling points?
Ionic bonds are very strong and a lot of energy is required to break them.

Why do metals have such high boiling points?
Metallic bonds are quite strong, in order to break them a lot of energy is needed.

1 comentario:

  1. This blog needs an introduction. Your table is very clear and your answers are good but a bit short. Remember to reference any sources of information.

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