educake

• How does increasing pressure affect the rate of reaction?

  It increases the frequency of successful collisions
• What characterizes an exothermic reaction?

  More energy is released than absorbed
• What type of material has the lowest surface-area-to-volume ratio?

  Large chunks
• What does it mean if the products have more energy than the reactants?

  It indicates an endothermic reaction
• What is required to break chemical bonds?

  Energy
• What do precipitation reactions involve?

  Two solutions forming an insoluble product
• What happens during a neutralization reaction?

  The temperature increases due to exothermic nature
• What is the dependent variable in an investigation?

  The result measured during the investigation
• What is the purpose of the delivery tube in a reaction setup?

  To transport gas to the measuring cylinder
• How does a catalyst affect a chemical reaction?

  It lowers the activation energy required
• How does concentration affect the rate of reaction?

  Higher concentration leads to a faster rate
• Why do powdered solids react faster than larger chunks?

  They have a larger surface area
• What happens to temperature during endothermic reactions?

  Temperature decreases as energy is absorbed
• What is true about different reactions and catalysts?

  Different reactions require different catalysts
• How does the resolution of measuring equipment affect measurements?

  Higher resolution leads to more accurate measurements
• What type of reaction is thermal decomposition?

  It is an endothermic reaction
• How is overall energy change calculated?

  Reactant bonds minus product bonds
• What are the key factors affecting the rate of reaction?

  • Pressure: Higher pressure increases reaction rate
  • Temperature: Higher temperature increases reaction rate
  • Surface area: Larger surface area increases reaction rate
  • Concentration: Higher concentration increases reaction rate
  • Presence of a catalyst: Lowers activation energy