At stp, both diamond and graphite are solids composed of carbon atoms. these solids have(1) the same crystal structure and same properties
(2) the same crystal structure and different properties
(3) different crystal structure and same properties
(4) different crystal structure and different properties

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of