Which of the following classifications of matter includes materials that can no longer be identified by their individual properties?

a. mixture
b. element
c. atom
d. compound

D. for example, H20 isn't hydrogen or oxygen (an element) or hydrogen and oxygen(mixture) or the original number of atoms oxygen and/or hydrogen had. this is because hydrogen and oxygen came together chemically, so their original properties changes.

Ithink c, the teen might think think being bullied is the end of the world and might want to just quit school, but the parent shouldn't see it that way. the parent should see the bright side. not agree with the teen and let them quit.

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