AP Chemistry

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

Why are asymmetrical molecules polar?

• Their dipoles do not cancel

• Their dipoles cancel

What is the hybridization for an oxygen in CO₂

• sp³

• sp

• sp²

When a molecular solid melts or boils, which breaks?

• Intermolecular forces

• Intramolecular bonds

Tags

NGSS.HS-PS3-4

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

• 12

• 6

• 4

• 8

Tags

NGSS.HS-PS1-1

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

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

• s^-1

• M/s

• M^-1s^-1

___________ are produced in one step and used up in a later step and __________________ are present and unchanged in the reactants and the products

• intermediates, catalysts

• catalysts, intermediates