CW7 Rates of Reaction

Which of the following would increase the rate of a chemical reaction?

• Freezing the chemicals

• Increasing the temperature of the reagents

• Removing a catalyst

• Using less chemicals

Which colour on the graph would represent the solution with the higher temperature?

• Red

• Blue

• None

• Both

What does NOT happen when the temperature is increased?

• Particles collide more often
• Particles collide with more energy
• Particles move faster
• More particles collide in the correct orientation

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

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.

What is the rate of reaction?

• How fast a reaction is 
• How big a reaction is
• How loud a reaction is
• How much gas a reaction produces

Tags

NGSS.HS-PS1-5

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

• to slow down

• move faster

• collide higher

• in the right order

Tags

NGSS.HS-PS1-5

The rate of a reaction is how _____________ a reaction occurs.

• Quickly

• Easily

• Unusually

• Differently

Tags

NGSS.HS-PS1-5

Increasing the temperature gives particles more __________.

• Time

• Energy

• Space

• Frequency

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

This glass contains hot water and a vitamin C tablet. Which of the following statements is correct?

• The reaction takes a long time and the tablet fizzes for a long time.

• The reaction is over and tablet stops fizzing very quickly.

• The tablet doesn't fizz at all.

• The reaction rate is very slow