catalysts

• what is a catalyst?

  a substance that speeds up a chemical reaction but is unchanged in mass and is unchanged chemically during the reaction
• T or F

  lumpy catalysts are more effective than powdered catalysts

  F - powdered are more effective because they have a greater surface area
• what do different reactions need? (referencing catalysts)


  different catalysts
• how does a catalyst work?

  a catalyst speeds up the rate of reaction by providing an alternative reaction pathway of lower activation energy