The characteristics of two different types of reactions are shown below: Reaction A: Protons are gained or lost by the atom of an element. Reaction B: Electrons are lost by the atoms of an element. Which statement is true about the two reactions?

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