2. You own a professional carpet cleaning business and need to restock your cleaning supplies. You're not sure whether you should continue buying the same cleaner as
before or if you should try something new. (Don't worry about prices). Design an
experiment to determine which cleaner works best.
a. What variables would you need to control in your experiment?
b. Which variable will you change to see how it affects the outcome?
C. What is the measurable data point for this experiment?
d. What would the procedure be for your experiment?

Compare and contrast physical changes with chemical changes.

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons

How do cfcs cause ozone depletion? how do cfcs cause ozone depletion? ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule.