Question

main idea: a catalyst lowers activation energy. 1. what is activation energy? 2. take notes about catalysts in the chart below. in the first two boxes, write detail notes about the main functions of catalysts. in the third box, write a detail about another characteristic. a catalyst lowers activation energy. 3. when a catalyst is present, more / less activation energy is needed to start a chemical reaction.

Explanation:

1. Activation energy is the minimum amount of energy that reacting particles must have in order to undergo a chemical reaction.
2. Main functions of catalysts: Increases reaction rate without being consumed in the reaction; provides an alternative reaction pathway with a lower activation - energy. Another characteristic: is specific to certain reactions.
3. When a catalyst is present, less activation energy is needed to start a chemical reaction as it lowers the activation energy.

Answer:

1. The minimum energy for reacting particles to react.
2. Increases reaction rate; Not consumed in reaction; Specific to certain reactions.
3. less