Which of the following elements Will gain electrons to form an ion? Check all that apply.

All of the following are part of the biosphere except

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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