C8 Rates and Equilibrium Revision

List four factors that affects the rate of a reaction

• temperature

• concentration

• surface area

• volume

• catalysts

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

• to slow down

• move faster

• collide higher

• in the right order

How does a catalyst work in speeding up a reaction?

• By lowering the activation energy or reaction

• by giving them more energy

• by making them more available

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

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

The ______________is required to break the bonds of the reactants.

• Carbonic energy

• Activation energy

• Plutonic energy

• Energi Gaib

What makes an effective collision?

• When molecules collide.
• When molecules collide with the proper orientation.
• When molecules collide with proper orientation and enough kinetic energy.
• High Temperature.

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

Which would dissolve faster?

• A

• B

• A and B

• None of the above

Tags

NGSS.HS-PS1-5

To speed up a reaction means that

• less time is taken to complete the reaction

• less materials is needed

• less materials the better

• more chemicals needed