AP Chemistry Unit 8

When a molecular solid melts or boils, which breaks?

• Intermolecular forces

• Intramolecular bonds

Tags

NGSS.HS-PS1-3

Choose the correct shape for this molecule:

• Trigonal planar

• Trigonal pyramidal

• Tetrahedral

• Linear

Tags

NGSS.HS-PS1-3

What is the total # of covalent bonds carbon has to make when drawing a Lewis structure?

• 12

• 6

• 4

• 8

What order is this graph?

• Zero

• First

• Second

• Third

Tags

NGSS.HS-PS1-5

What order is this graph?

• Zero

• First

• Second

• Third

Tags

NGSS.HS-PS1-5

If you quadruple the concentration and the rate quadruples, what order is this reaction?

• zero

• first

• second

Tags

NGSS.HS-PS1-5

The particles under the purple curve (middle) have an average Kinetic Energy that is proportional to of 500K

• True

• False

Tags

NGSS.HS-PS1-5

Which step of a reaction mechanism determines the rate?

• the slow step

• the fast step

• the first step

• the second step

What is the unit for the rate constant (k) for 2^nd order reactions?

• s^-1

• M/s

• M^-1s^-1

Tags

NGSS.HS-PS1-5

If a “reaction profile” has a taller ‘hill’ (or activation energy) then the reaction is ____________________?

• Faster

• Slower