Question

State four precautions taken to obtain an accurate result

Answer 1

Answer:

Collision theory states that for a chemical reaction to occur, the reacting particles must collide with one another. The rate of the reaction depends on the frequency of collisions.

Answer 2

Answer:

Precautions for all experiments:

1. Avoid parallax error by placing eyes at measured level.
2. Switch off the fan in the lab so that wind will not affect the result.
3. Ensure that the ruler has stopped moving before taking length measurement.