SPM Form 5: Rate of reaction (Checklist)

• Rate of reaction: The decrease in the amount of reactant used or the increase in the amount of product obtained in a given time. The rate of reaction measures how much product is formed in a certain time. Some reactions are slow, such as rusting, and some are fast, like burning.
• Average of reaction: The average value of the rate of reaction within a specified period of time.
• Rate of reaction at a given time: The actual rate of reaction at a specific time.
• Collision theory: A model that explains reaction rate as the result of particles colliding with a certain minimum energy.
• Effective collision: A collision in which the particles meet with sufficient energy and an orientation that allows them to react.
• The rate of reaction decreases with the increase of time.
• The rate of reaction increases as the total surface area of a solid reactant increases.
• The rate of reaction increases as the concentration of reactant increases.
• The rate of reaction increases as the temperature of a reactant increases.
• The rate of reaction increases when a positive catalyst is used and the rate of reaction increases when the amount of a positive amount used increases.
• Catalyst: A substance which alters the rate of a chemical reaction while it remains chemically unchanged at the end of the reaction.