What should scientists do after completing a scientific investigation? o write a hypothesis
confirm the results
O design the procedure
make observations

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size

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