Question

question 9
which of the following is an example of chemistry?
cooking dinner
all of the options
creating a new recyclable plastic
improve the efficiency of a solar cell

Explanation:

• Cooking dinner involves chemical reactions like food breakdown, heat - induced changes.
• Creating new recyclable plastic involves chemical synthesis and modification of polymers.
• Improving solar cell efficiency involves chemical processes in materials (e.g., semiconductor chemistry). So all options relate to chemistry.

Answer:

B. all of the options