Ninety-nine percent of all the matter that can be observed in the universe exists as
a. gases.
b. plasmas.
c. liquids.
d. solids. reset selection
mark for review what's this?

How many atoms are there in 5.70 mol of mg

Part 1: include important facts found through your research. part 2: include your visual display. include your summary of “the chemistry of water” from the national science foundation website. include your experiment. part 3: include responses to the reflection questions.

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together