Bonding

What is the formula of sodium oxide?

• 2NaO

• Na₂O

• NaO₂

• Na2O

Tags

NGSS.HS-PS1-2

Atoms want to have a full outer shell to be ...............

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the formula of aluminium oxide?

• AlO₂

• AlO₃

• Al₂O₃

• Al₃O₂

What is the correct definition of covalent bonding?

• The sharing of electrons

• A shared pair of electrons

• The swapping of electrons

• The swapping of a pair of electrons

What force holds ionic compounds together?

• electrostatic

• electromagnetic

• intermolecular

• macromolecular

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

Which statement is wrong?

• There are a maximum of 2 electrons in the first shell

• There are a maximum of 8 electrons in the outer shells

• Electrons fill up the lowest energy levels first

• electrons fill up orbitals in pairs

What type of bonds are present in this molecule?

• Ionic

• Metallic

• Covalent

Tags

NGSS.HS-PS1-1

Why do simple molecules have low melting points?

• because they are only made up of a few atoms

• because they have weak electromagnetic forces between molecules

• because they have weak electrostatic forces between molecules

• because they have weak intermolecular forces between molecules

Name this molecule

• methane

• methene

• ethane

• ethene

macromolecular structures include...

• ionic compounds

• simple covalent

• giant covalent

• metallic