Rate of reaction

Identify which reaction had the highest rate.

• Red

• Blue

• Both

• Neither

Select evidence that the blue reaction occured faster than the red reaction.

• The blue line is higher from 0-60 seconds only.

• The blue line is steeper between 0 and 30 seconds only.

• More gas was produced after 120 seconds only.

• All of these reasons.

Calculate the rate of gas produced (cm3sec-1) in the blue reaction between 0 and 60 seconds.

Do not write units, show your answer to two decimal places.

Predict the total volume of gas produced in the blue reaction after 150 seconds.

Write your answer as a whole number, do not use units.

Select the best explanation for why the volume of gas produced in the blue reaction would be about 9 cm3 after 150 seconds.

• The reaction appears to stabalise between 105 and 120 seconds.

• The reaction appears to speed up between 105 and 120 seconds.

• The reaction appears to slow down between 105 and 120 seconds.

• The reaction appears to stop between 105 and 120 seconds.

Select the correct sentence.

• For a reaction to occur the atoms have to collaborate with each other.

• For a reaction to occur the atoms have to collide with each other.

• For a reaction to occur the atoms have to collude with each other.

• For a reaction to occur the atoms have to fall in love.

Select the correct sentence.

• For a reaction to be successful the particles must have enough deactivation energy.

• For a reaction to be successful the particles must lose activation energy.

• For a reaction to be unsuccessful the particles must have enough activation energy.

• For a reaction to be successful the particles must have enough activation energy.

Select the correct sentence.

• If collisions are successful, particles combine or rearrange themselves to make new molecules.

• If collisions are unsuccessful, particles combine or rearrange themselves to make new molecules.

• If collisions are successful, particles combine or rearrange themselves to make existing molecules.

• If collisions are successful, particles move apart to make new molecules.

Select the correct sentence.

• Higher rates of reaction have more unsuccessful collisions.

• Lower rates of reaction have more successful collisions.

• Higher rates of reaction have more successful collisions.

• Lower rates of reaction have more unsuccessful collisions.

Increasing .......... can increase the number of successful collisions in a given time period (e.g. one minute).