Rates of Reactions

A temperature increase causes the particles to ......

• to slow down

• move faster

• collide higher

• in the right order

Tags

NGSS.HS-PS1-5

Why does a higher concentration increase the rate of reaction?

• it increases the amount of reactants

• it lowers the activation energy

• it increases the energy of particle collisions

• it increases the frequency of particle collisions

Tags

NGSS.HS-PS1-5

Why does a higher temperature increase the rate of a reaction?

• it increases both the frequency and energy of particle collisions

• it only increases the frequency of particle collisions

• it only increases the energy of particle collisions

• it reduces the activation energy of the reaction

Tags

NGSS.HS-PS1-5

Breaking up a lump of potassium into smaller pieces increases the rate of reaction due to increased

• concentration

• surface area

• temperature

• reactants

Tags

NGSS.HS-PS1-5

As the frequency of ______________ increases, the rate of reaction increases.

Hint: frequency means how often

• Time

• Reactions

• Collisions

• Reactants

You add more people into an enclosed space in hope for more collisions. You have increased:

• temperature

• concentration

• pressure

• catalyst

Tags

NGSS.HS-PS1-5

This question is based on the video you watched:

Shrinking the size of corridors in school is the same as

• increasing the temperature

• using a smaller container

• adding more reactants

• breaking up a lump of solid into smaller pieces

• adding a catalyst

This question is based on the video you watched:

Not allowing students to travel in packs is the same as

• increasing the temperature

• using a smaller container

• adding more reactants

• breaking up a lump of solid into smaller pieces

• adding a catalyst

The ______________is required to break the bonds of the reactants.

• Carbonic energy

• Activation energy

• Plutonic energy

• Energi Gaib

Tags

NGSS.HS-PS1-4

Why don't all collisions between particles cause a reaction?

• the particles also need to collide with a catalyst
• not all the particles collide with enough energy
• not all the particles collide at a high enough temperature
• the particles need to collide with each other twice

Tags

NGSS.HS-PS1-5