Many occupations involve the daily mixing or separating of materials into various states of matter

Many occupations involve the daily mixing or separating of materials into various states of matter. Examples might include a chemist, pharmacist, baker, mining engineer, or waste-management worker. Select one of these occupations to discuss and explain what materials this person might use on the job. Describe the substances he or she might mix or separate. Does mixing or separating change the components of the original materials? Why is it important for these professions to understand the different states of matter?