How was penicillin discovered?

Which product can be made from compounds found in petroleum?

Why shouldn\'t you mix cleaning materials?

Chemists have found substances in foods that prevent diseases. What are these substances called?

Chains of large molecules containing identical smaller units connected together make up nylon. What is this general type of material called?

What does the warning label on a chemical cleanser tell you?

What is an antibiotic?

What bacteria-killing substance did Alexander Fleming discover?

Which of the following is an example of Technology in health?

Which of the following is an example of Technology in transportation?

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