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Chemical Reaction Rates

Published on Nov 19, 2015

Speeding or slowing of chemical reactions and factors that affect that. Guidelines found at http://zunal.com/tasks.php?w=175577

PRESENTATION OUTLINE

Chemical Reaction Rates

By Emory Grace Doster
Photo by Paul's Lab

Why Should We Speed Up a Chemical Reaction?

  • Manufacturing Purposes
  • The product may be necessary  
  • in an emergency
Photo by katerha

Why Should We Slow Down a Chemical Reaction?

  • In Demonstrations
  • For Safety
Photo by quidquid

Factors that Affect Chemical Reactions

  • Temperature
  • Concentration
  • Stirring 
  • Catalysts
Photo by Neal.

Temperature:
The higher the temperature, the faster the particles move, speeding up the reaction.

Concentration:
The more reactants present, the greater the rate of particles colliding, and the faster the rate of reaction.

Stirring:
Stirring moves the particles around and increases their contact with each other, speeding the reaction.

Catalysts:
A catalyst is a substance that is neither a reactant nor product that changes the environment so the particles move faster, speeding the reaction.