“FACTORS AFFECTING THE RATE OF REACTION”

• Rate of Chemical Reactions 


  It is the speed at which a reaction occurs or how fast it occurs.
• Collision Theory 


  According to it, two reactants must collide. The collision must have ENOUGH ENERGY.
• Activation Energy 


  It is the MINIMUM AMOUNT OF ENERGY needed for the particles to react and is different for each reaction.
• How does the temperature affects the rate of chemical reaction?

  Because they move faster and more likely to collide with other particles in higher temperature.
• Concentration 


  It affects the DISSOLVED (LIQUID) reactants
• Pressure 


  It affects the GASEOUS reactants
• Pressure

  As the pressure increases, the space in which the gas particles are moving becomes smaller.
• How does the Surface Area affects the rate of Chemical Reactions?

  The smaller the pieces, the larger the surface area. A larger surface area increases the rate of chemical reactions.
• Catalyst 


  It is the substances that change the rate of a reaction without being used up in the reaction.
• Concentration 


  The number of molecules of a substance in a given volume.
• Enzyme


  It is the biological catalyst