Chemistry, 05.10.2020 15:01, officialgraciela67

PLEASE HELP ME QUICK When an iron nail is ground into powder, its mass .
a. stays the same
b. decreases
c. increases
d. cannot be determined

When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?

a. a physical change
b. a chemical change
c. neither a physical change nor a chemical change
d. both a physical change and a chemical change

Answers: 2

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PLEASE HELP ME QUICK When an iron nail is ground into powder, its mass .
a. stays the same

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