Collisions/reactions

• What is rate?

  How quickly a reaction occurs
• What needs to happen to happen for a reaction to occur?

  Particles need to collide with enough energy
• What happens if there is more collisions?

  The higher the rate of reaction
• What are the factors that affect rate of reaction?

  • Energy
  • Temperature
  • Enzymes
  • Concentration
• What is activation energy?

  The minimum amount of needed for colliding particles to react
• What are catalysts?


  Substances that speed up a reaction without being used up by lowering activation energy
• What are enzymes?


  Specifically shaped proteins that are biological catalysts, speeding up metabolic reactions
• What do enzymes act as?

  Biological catalysts
• What do enzymes do?

  Speed up metabolic reactions
• When enzymes catalyse the reaction what do they break up or make?

  Break up polymers into monomers or make monomers into polymers
• What are enzymes?


  Biological catalysts - they speed up reactions without being used up
• What happens if there is more successful collisions between enzymes and substrates?

  There will be more reactions