What was alchemy? A. An area of research that investigated all areas of science using chemistry B. An attempt to turn cheap metals into gold and develop potions using superstitious practices C. A part of chemistry that experimented only with metals D. An early form of chemistry based on experiments and evidence to test ideas

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