Chemistry unit 2

Created by: Huzaima1
Created on: 04-01-15 19:13

Introduction - When two or more elements react together compounds are formed. The atoms of elements join together by sharing electrons or by transferring electrons to achieve stable electronic structures.

Atoms of the noble gases have stable electronic structures.

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What is covalent bonding?

Covalent bonding is when atoms of non-metallic elements join together by sharing electrons.

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When they react, what do metallic elements and non metallic elements produce?

Ionic compounds.

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What do metal and non metal atoms form?

Metal atoms lose electrons to form positive ions. Non metal atoms gain electrons to form negative ions. The ions have the stable electronic structure of a noble gas.

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What is an ion?

A charged particle produced by the loss or gain of electrons.

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What is ionic bonding?

The opposite charged ions attract each other in the ionic compound and this is called ionic bonding.

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How can you tell that the compound H2O has covalent bonds?

Because it is made of non metals.

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Element in Group 1 and Group 7 of the Periodic table have atoms with how many electrons in their highest occupied energy level/outer shell?

Group 1 - 1 and group 7 - 7. Atoms of metals in Group 1 combine with atoms of non metals in group 7 by transferring electrons to form ions that have the electronic structure of noble gases.

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