Rates of Reactions

Front

What is the effect of surface area on the rate of reaction?

Back

Increasing the surface area of a reactant increases the rate of reaction because it allows more particles to collide and react.

Front

Does increasing the concentration of reactants always speed up a reaction?

Back

No, increasing the concentration of reactants generally speeds up a reaction, not slows it down.

Front

What is a catalyst?

Back

A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.

Front

How does a catalyst affect activation energy?

Back

A catalyst lowers the activation energy required for a reaction to occur.

Front

What is activation energy?

Back

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

Front

Which factors affect the rate of reaction?

Back

Factors include temperature, concentration, surface area, and the presence of catalysts.

Front

What happens to the rate of reaction when temperature increases?

Back

Increasing the temperature generally increases the rate of reaction because particles move faster and collide more often.

Front

What is the role of temperature in chemical reactions?

Back

Temperature affects the kinetic energy of particles, influencing the frequency and energy of collisions.

Front

What does the term 'polarity' refer to in chemistry?

Back

Polarity refers to the distribution of electrical charge over the atoms in a molecule.

Front

Is polarity a factor affecting reaction rate?

Back

No, polarity is not typically considered a factor affecting the rate of reaction.