Describe how PERIODS and GROUPS are set up on the Periodic Table of Elements.

Which of the following might a chemist choose to study? a. glacier movement in alaska b. better ways to recycle plastics c. the effects of hurricanes on turtle populations d. the vibrations in bridges caused by big trucks

Different isotopes indicate that an element will have different numbers of

0.09 moles of sodium sulfate in 12 ml of solution