AP Chemistry Unit 2

Which orbital is filled after 4p?

• 5s

• 4s

• 3d

• 4p

Tags

NGSS.HS-PS1-1

What is the bond angle in H₂O?

• 120

• 90

• 180

• 104.5

Fill in the blanks: germanium is a ________________, hydrogen is a _________________ and uranium is a ________________

• metal, non-metal, metalloid

• metalloid, non-metal, metal

• non-metal, metal, metalloid

Tags

NGSS.HS-PS1-1

Are asymmetrical molecules polar or nonpolar?

• Polar

• non-polar

• neither

Combustion reactions produce what two substances?

• Water Vapor and Carbon Dioxide

• Carbon Dioxide and Oxygen

• Oxygen and Water Vapor

What type of bond forms between hydrogen and chlorine?

• polar covalent

• non-polar covalent

• ionic

• hydrogen bond

Tags

NGSS.HS-PS1-1

What is the bond angle in NH₃?

• 90

• 120

• 107.5

• 180

Which liquid has the highest vapor pressure at 75^oC?

• ethanoic acid

• ethanol

• propanone

• water

Why does a gas with a lower vapor pressure have a higher boiling point?

• the molecules need more energy to break free of their attractions to other molecules and change phase from liquid to gas

• the forces of attraction between the molecules are strong

• the substance has low volatility

• all of the answers are correct

How many moles of H₂ is needed to react with 2 moles of N₂?

• 6

• 3

• 2

• 1

Tags

NGSS.HS-PS1-7