Covalent Bonding Flash Cards

Covalent bonds are formed between...

• two or more metal atoms

• two or more non-metal atoms

• a metal and a non-metal atom

Covalent bonds are formed when electrons are transferred between atoms.

• True

• False

Atoms can only share electrons in the _____ shell.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Fluorine is a diatomic molecule. Fluorine is in Group 7. How many electrons are shared in this covalent bond?

Oxygen is a diatomic molecule. Oxygen is in Group 6. How many electrons are shared in this covalent bond?

The structure of ammonia is shown in the diagram. What is the formula for ammonia?

• NH₃

• HN₃

• N3H

• HN³

Select the properties of simple covalent substances.

• Low melting and boiling points.

• High melting and boiling points.

• Do not conduct electricity.

• Good conductors of electricity.

Why do simple covalent substances not conduct electricity?

• They have low melting points.

• They have low boiling points.

• There are no delocalised electrons or free ions to carry the charge.

• The molecules are too large.

Covalent structures have low melting and boiling points because it does not take much energy to break the _____ intermolecular forces.

• weak

• strong