AP Chemistry Thou Shalt Not Forget

Which of these is false in terms of speeding up reactions?

• Adding a catalyst lowers the activation energy

• increasing reactant concentration increases collisions

• increasing surface area decreases collisions

• increasing temperature increases collisions

Tags

NGSS.HS-PS1-5

What happens to K if a reaction is reversed?

• 1/K

• K²

• 2K

• -K

If the pressure of a system is increased, which direction will equilibrium shift?

• toward the side with less moles of gas

• toward the side with more moles of gas

• it will not shift

Which atom has the negative dipole in this molecule?

• Hydrogen

• Fluorine

• Neither

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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-PS1-1

NGSS.HS-PS1-2

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

Tags

NGSS.HS-PS1-3

What type of bond forms between hydrogen and chlorine?

• polar covalent

• non-polar covalent

• ionic

• hydrogen bond

What type of alloy is this?

• Interstitial

• Substitutional

Tags

NGSS.HS-PS1-3

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

• 12

• 6

• 4

• 8

Tags

NGSS.HS-LS1-6