The sizes of the pieces of calcium carbonate will be changed but the total mass of the pieces will be kept the same. Why is it also important to keep the volume, type and concentration of the acid the same? RATE OF REACTION

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