If the moon disappeared, what effect would this have on the earth’s tides?
a) there would no longer be any tides.
b) the tides would be much more dramatic.
c) tides would not be as noticeable as they are now.
d) tides would happen only once each year.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Classify this reaction: 2al+n2-> aln.

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