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Effect of Temperature and Particle Size on Reaction Rate

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Questions and Answers

How does increasing the temperature affect the reaction rate?

Results in fewer particles being available for collision
Lowers the activation energy required
Decreases the number of collisions
Increases the kinetic energy of particles (correct)

How does decreasing particle size impact the reaction rate?

Increases surface area for more collisions (correct)
Reduces the number of collisions
Decreases kinetic energy of particles
Lowers the activation energy

What happens to lipids at low temperatures according to the text?

They evaporate
They become liquid
They coagulate (correct)
They solidify

How does an increase in concentration impact the rate of reaction?

Enhances the kinetic energy of particles (C) Signup and view all the answers

What effect does an increase in surface area have on collision theory?

Provides more particles available for collision (B) Signup and view all the answers

Which of the following factors affects the rate of a chemical reaction?

All of the above (D) Signup and view all the answers

What is the role of concentration in the collision theory of chemical reactions?

Increased concentration ensures there will be more collisions between particles, increasing the probability of effective collisions. (B) Signup and view all the answers

According to the collision theory, for a chemical reaction to occur, what must happen to the particles involved?

Both a and b are correct. (C) Signup and view all the answers

In the experiments described, which setup had the fastest reaction?

Baking soda and vinegar (D) Signup and view all the answers

What is the definition of temperature according to the text?

The degree of hotness or coldness measured on a definite scale. (A) Signup and view all the answers

What is the definition of concentration according to the text?

The amount of a component (matter) in a given area or volume. (D) Signup and view all the answers

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