Which of the following best defines a chemical bond?

• A physical connection

• Made from a lone pair

• An electrostatic attraction

• Made from one electron

Tags

NGSS.HS-PS1-3

Which of the following is the bond capacity of a boron atom?

• 1

• 2

• 3

• 4

The difference in electronegativity between a Na and O atom is 2.6. What type of bond will these two atoms form?

• Intermolecular Bond

• Ionic Bond

• Polar Covalent Bond

• Nonpolar Covalent Bond

Tags

NGSS.HS-PS1-1

Which of the following is TRUE about molecules?

• Will have bonds with a ΔEN of larger than 1.7

• Nonpolar covalent molecules always have partial charges

• Always made of a metal and nonmetal

• Their atoms can bond through equal and unequal sharing of electrons

Tags

NGSS.MS-PS1-1

What is the correct formula for ferrous oxide?

• Fe₃O₂

• Fe₂O₃

• Fe₂O

• FeO

Tags

NGSS.HS-PS1-7

What is the IUPAC name for P₂O₅?

• phosphorus pentoxide

• diphosphorus pentoxide

• phosphorus oxide

• diphosphorus oxide

What is the formula of sodium suflate decahydrate?

• Na(SO₄)₂ · 10H

• Na₂H₁₀SO₄

• NaSO₄ · 10H₂O

• Na₂SO₄ · 10H₂O

What is the IUPAC name of H₃PO_{4 (aq)}?

• trihydrogen phosphate

• hydrogen phosphite

• phosphorous acid

• phosphoric acid

What is the valence of sulfur in SF₆?

• -2

• -6

• +2

• +6

Tags

NGSS.HS-PS1-2

Which of the following is NOT a rule you should follow when drawing Lewis structures?

• Draw the molecule symmetrically

• The central atom tends to have the highest bond capcity

• All atoms follow the Octet Rule when bonding

• Bonds are drawn as solid lines