Unit Review - Chemical Bonding

All elements in group (column) 2 have ___ valence electron(s) and an ionic charge of ____.

• 1, +2

• 2, -2

• 2, +2

• 6, +2

Tags

NGSS.HS-PS1-1

Why do atoms create chemical bonds?

• to become ions and attract or repel each other

• to get an outer shell with 8 valence electrons

• to become either polar or nonpolar

• to increase their atomic numbers

Tags

NGSS.HS-PS1-1

When a metal and nonmetal react, the nonmetal will _____.

• lose electrons and form a cation

• lose electrons and form an anion

• gain electrons and form an anion

• gain electrons and form a cation

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic bonds form between a metal and a nonmetal. Which of the following would you expect to be ionic?

• SF6

• H2O

• CaO

• CO2

Tags

NGSS.HS-PS1-3

If an element has 2 valence electrons, what will its charge be if it becomes an ion?

• +2

• -2

• +6

• -6

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Elements on the left side of the periodic table will form _____, while elements on the right side will form _____.

• cations, anions

• anions, cations

Potassium ions have a ____ charge and Oxygen ions have a ___ charge.

• -1, +2

• +1, +2

• +1, -2

• -1, +2

Name the following IONIC compound: Na2S

• Sodium Sulfite

• Sodium Sulfide

• Sodium Sulfate

• Disodium Monosulfide

The compound Al2O3 has ___ aluminum atoms and ___ oxygen atoms.

• 2, 3

• 3, 2

• 1, 1

• 5, 0

Tags

NGSS.MS-PS1-1

In a(n) _______ bond, electrons are transferred from one atom to another. In a(n) ______ bond, electrons are shared between atoms.

• ionic, covalent

• covalent, ionic

• ionic, metallic

• metallic, covalent