The following graph shows two different reaction pathways for the same overall reaction at the same temperature. Which pathway is slower and why?

Red, because the activation energy is larger

Blue, because the activation energy is lower

both reaction progress at the same rate

Which of the following is NOT true at equilibrium?

The concentration of the reactants is equal to the concentration of the products.

The forward and reverse reactions proceed at the same rate.

The concentrations of reactants and products do not change.

The forward and reverse reactions continue to occur.

For the reaction... N 2 (g) + 3 H 2 (g) <=> 2 NH 3 (g) If the pressure in the system is increased , which substance(s) will increase in concentration?

NH 3 (as 4 mol gas → 2 mol gas)

N 2 (as 2 mol gas → 4 mol gas)

H 2 (as 2 mol gas → 4 mol gas)

N 2 and H 2 (as 2 mol gas → 4 mol gas)

What is kinetic energy?

The energy an object has due to its motion.

The energy an object has due its chemical composition.

The energy an object has due to its atomic structure.

Thermal energy always moves:

From a high temperature object to a lower temperature object.

From a lower temperature object to a higher temperature object.

From an object with lower kinetic energy to an object with higher kinetic energy.

From an object of higher mass to an object of lower mass.

What criteria must be met for reactant collisions to result in a successful product?

The reactants must collide with enough energy and be in the right positions

The reactants must collide with each other

The reactants must have enough energy to form the activated complex

Reaction rate

Authored by Joshua Bradley

Chemistry

10th - 12th Grade

NGSS covered

Used 44+ times

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What do you increase when you crush an alka seltzer tablet?

Surface area

temperature

concentration

pressure

Tags

NGSS.HS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which graph shows the highest reaction rate?

Tags

NGSS.HS-PS1-5

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Catalysts permit reactions to proceed along a ___________energy path.

lower

higher

magnetic

psycho's

Tags

NGSS.HS-PS1-4

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

larger

smaller

rectangular

spherical

MULTIPLE SELECT QUESTION

20 sec • 1 pt

Pick the TWO (2) options that will INCREASE the rate of a reaction.

Reducing Heat

Adding Catalyst

Adding Heat

Removing Catalyst

Tags

NGSS.HS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Activation energy is only required to start an exothermic reaction.

false

true

Tags

NGSS.HS-PS1-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where does the energy needed for an endothermic reaction come from?

reactants

products

environment

Tags

NGSS.HS-PS1-4

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Reaction rate

What do you increase when you crush an alka seltzer tablet?

Which graph shows the highest reaction rate?

Catalysts permit reactions to proceed along a ___________energy path.

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

Pick the TWO (2) options that will INCREASE the rate of a reaction.

Activation energy is only required to start an exothermic reaction.

Where does the energy needed for an endothermic reaction come from?

The minimum energy required to start a reaction is:

"Rate" is related to:

What type of reaction is this?

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