Energy — Test

Question 1

Which will cause an increase in the reaction rate between molecules?

Revolt · Accepted Answer

Molecules collide more frequently.

Question 2

Which statement describes thermal energy?

Revolt · Accepted Answer

the energy that is associated with temperature

Question 3

Which direction does heat flow from?

Revolt · Accepted Answer

hot to cold

Question 4

Consider the reaction below.C2H4(g) + H2(g) C2H6(g)Which change would likely cause the greatest increase in the rate of the reaction?

Revolt · Accepted Answer

increase temperature and increase pressure

Question 5

What happens to energy when Sally kicks a soccer ball?

Revolt · Accepted Answer

Kinetic energy is transferred from the leg to the soccer ball.

Energy — Test Answers