You need to be familiar with the three states of matter and their properties and be able to apply the particle model to unfamiliar materials and contexts. Solid
Liquid
Gas
You will also need to be able to identify the suitable method of separation for a mixture.

Please you will have 25 points

Individuals within populations exhibit some diversity. as a result of possessing slightly different traits, some individuals are better able to survive and reproduce than others. if these individuals changes in the characteristics of the population may occur over time. the cumulative change in these characteristics is known as