Covalent Structure

A covalent bond occurs when two

• atoms share a pair of electrons

• atoms give away a pair of electron

Elements such as  Silicon, diamond and graphite.  Compounds include  SiO₂

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.HS-PS1-3

Low melting and boiling points which increase with increasing molecule size due to increased intermolecular forces.

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.MS-PS1-1

Melting points are very high – a large amount of energy is needed to break all the covalent bonds

• simple covalent molecules
• metallic
• ionic
• giant covalent 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What structure is shown in the diagram?

• Diamond
• Graphite
• Carbon fiber
• Carbon nanotubes

Tags

NGSS.HS-PS1-3

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nucleus merge
• When the neutrons leave the nucleus

Tags

NGSS.HS-PS1-2

Covalent bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Tags

NGSS.MS-PS1-1

Atoms are most stable when their outer shell is complete.

• true
• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic or covalent?
NaBr

• Ionic
• Covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic or covalent?
H₂O

• Ionic
• Covalent

Tags

NGSS.HS-PS1-2