Question

How does the particle model of matter help explain the rate of reactions?Why is it unnecessary to write an equation for a physical change?

Answer 1

Answer:

The main ideas of the particle model are: All matter is made up of very small particles. The particles are held together by bonds of varying strength. ... The particle movement speeds up as temperature increases and slows down as it decreases.

Sometimes, the amount of energy involved in a reaction may be so small that the change in energy is not readily noticeable. An equation can be used to describe a physical reaction, which involves a change of states.