AP Chemistry Unit 8

In this molecule, Carbon has a formal charge of ____ and Nitrogen has a formal charge of _____.

• 0, 0

• 1, 0

• 0, -1

• -1, 0

Tags

NGSS.HS-PS1-7

Combustion reactions produce what two substances?

• Water Vapor and Carbon Dioxide

• Carbon Dioxide and Oxygen

• Oxygen and Water Vapor

As the electronegativity difference between 2 atoms increases, the polarity of the bond ____________________

• increases

• decreases

What type of bond forms between hydrogen and chlorine?

• polar covalent

• non-polar covalent

• ionic

• hydrogen bond

What is the total # of covalent bonds carbon can form when drawing a Lewis structure?

• 12

• 6

• 4

• 8

What is the bond angle in BF₃?

• 90

• 120

• 109.5

• 180

What is the bond angle in H₂O?

• 120

• 90

• 180

• 104.5

Are asymmetrical molecules polar or nonpolar?

• Polar

• non-polar

• neither

What is the bond angle in NH₃

• 120

• 107.3

• 180

• 90

Count the number of sigma and pi bonds in this molecule:

• 13 sigma, 1 pi

• 14 sigma, 2 pi

• 1 sigma, 14 pi

• 2 sigma, 13 pi