How to Speed Up Chemical Reactions

Increase in temperature of the reactants can do one of the following

• Slows the reaction

• The reaction is unchanged

• Speeds the reaction up

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NGSS.HS-PS1-5

Grinding a seltzer tablet into powder increases the rate of reaction due to increased

• concentration
• surface area
• temperature
• reactants

Which factors increase the rate of a reaction.

• increasing temperature
• increasing concentration
• increasing surface area
• all of these

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NGSS.HS-PS1-5

Increasing concentration increases reaction rate due to more particle collisions.

• True

• False

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NGSS.HS-PS1-5

Which of the following slows down the rate of a chemical reaction?

• Place the reactants in hot water
• Place the products in ice bath
• Place the reactants in a ice bath
• Keep stirring the reactants with a stirring rod

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NGSS.HS-PS1-5

The graph shows how the total volume of a gas given off from a reaction changes with time. In which time interval is least gas given off? 

• A
• B
• C
• D

• A
• B
• C
• D

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NGSS.HS-PS1-5

• A
• B
• C
• D

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NGSS.HS-PS1-5

• A
• B
• C
• D

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NGSS.HS-PS1-5

• A
• B
• C
• D

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NGSS.HS-PS1-5