Factors affecting reaction rates.

Front

What is meant by the rate of reaction?

Back

The rate of reaction refers to the speed at which reactants are converted into products in a chemical reaction.

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Front

How does an increase in temperature affect particle movement?

Back

An increase in temperature causes the particles to move faster.

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Front

What effect does increasing the concentration of reactants have on a reaction?

Back

Increasing the concentration increases the number of particles available to collide, which can lead to a higher reaction rate.

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Front

What is the relationship between concentration and collision frequency?

Back

Higher concentration leads to more particles in a given volume, resulting in more frequent collisions between reactants.

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NGSS.HS-PS1-5

Front

What is the significance of collision theory in reaction rates?

Back

Collision theory states that for a reaction to occur, particles must collide with sufficient energy and proper orientation.

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Front

How does surface area affect the rate of reaction?

Back

Increasing the surface area of a solid reactant allows more particles to be exposed and available for collisions, increasing the reaction rate.

Front

What role does a catalyst play in a chemical reaction?

Back

A catalyst increases the rate of a reaction by lowering the activation energy required for the reaction to occur.

Front

How does pressure affect the rate of reaction for gases?

Back

Increasing pressure in a gas reaction decreases the volume, leading to more frequent collisions and a higher reaction rate.

Front

What is activation energy?

Back

Activation energy is the minimum energy required for a chemical reaction to occur.

Front

How can the rate of a reaction be measured?

Back

The rate of a reaction can be measured by observing changes in concentration, volume of gas produced, or color change over time.

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