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Flashcards in Bonds Deck (10)
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1

Molecules

Atoms bonded together. Mass = individual atoms mass added together.

2

Bonds

Holds atoms together. Bonds are held together by valence electrons.

3

Ionic bond

Metals and non-metals – two ions are held together by their opposite charges.

 

4

Octet rule

Atoms are happy (strongest bond) when there are 8 electrons in there outer shell (valence).

5

Covalent bonds

Two non-metals – the atoms share the electrons.

 

6

Hydrogen bond

Weak bonds that are a result of polar molecules, where the electrons are pulled away from the hydrogen atoms. Net charge on each side of molecule.

 

7

Metal bond

Metallic atoms – share their electrons; special class of covalent bonds. Electrons are a cloud or sea. Metals are malleable (bendable, flexible) because electron cloud can move around. Metals conduct sound and electricity well, because of the electron cloud.

 

8

Carbon

Has 4 valence electrons – it almost always forms a covalent bond.

9

Hydrocarbons

Saturated (alkanes) – CnH2n+2

Unsaturated (alkenes) – CnH2n-2

10

Electronegativity

How much (how badly) an atom wants more electrons.