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Science

What is the rate of reaction.

The speed at which a chemical reaction occurs

The chemical reactions that occur.

Why does reaction rate increase as the temperature increases?

Particles begin to collide at higher temperatures

At higher temperatures particles move faster and collide more often

There are more particles at higher temperatures, so they collide more

Which of the following statements about collisions is correct?

All colliding particles have the same amount of energy

Only fast-moving particles collide with each other

Reactions can happen if the colliding particles have enough energy

What will speed up a reaction?

Why do not all collisions between reactive molecules result in a reaction?

They may collide to hard

They do not all have enough energ

They may not all have the same bonds

__________ energy is the amount of energy needed for particles to react

All chemical reactions happen at the same speed.

True

False

Reaction rates can be changed

True

False

Reaction rates can be controlled by:

Concentration

Temperature

Pressure

None of the above

Reaction rates can change over time as the reaction proceeds.

True

False

The rate of a reaction can be measured by:

The smell of smoke

The rate of formation of the product

The temperature of a reactant

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