Which of the following types of rocks forms from cooling lava at earth's surface a. metaphoric b. igneous c. sedimentary

How many ions that have a +1 charge will bond with an ion that has a -2 charge

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

Fission of uranium-235 products energy and a. isotopes of smaller elements b. isotopes of larger elements c. lighter isotopes of uranium d. heavier isotopes of uranium