E Learning Unit 5

What are ionic bonds?

• valence electrons transferred between atoms
• Inner most electrons transferred between atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why do ionic bonds form?

• so the number of protons equals the number of electrons
• to fill the outermost energy level
• so an atom can become unstable

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An atom that has gained or lost electrons is called ...

• a winner
• an isotope
• an ion
• a loser

Atoms that lose electrons become...

• negatively charged
• postively charged
• remain neutral, no charge
• losers

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atoms that gain electrons become...

• negatively charged
• positively charged
• remain neutrally charged
• 21

Tags

NGSS.HS-PS1-1

Oppositely charged ions...

• attract one another

• stick together

• neutralize one another

• all of these answers are correct

Which dot structure shows the correct transfer of electrons between sodium and oxygen?

• a

• b

• c

• d

This picture illustrates the formation of an ionic bond.

• True

• False

What is the NAME of....
Mg₃N₂

• magnesium (III) nitride
• magnesium (II) nitride
• magnesium (II) nitrogen
• magnesium nitride

Tags

NGSS.MS-PS1-1

The name of Ca₃(PO₄)₂ is

• calcium phosphide oxide
• calcium phosphate
• tricalcium diphosphate
• carbon phosphate