- Explain why there are different types of atoms. - Describe the difference(s) between an atom and an element.
- Identify things that can be found in a home that is considered an element.​

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.

5.6⋅10−^19  j

do you need the explaination?