A student left a jar of water outside his home. Water can be a solid, liquid, or gas. When he put the jar outside, the water was LIQUID. Twelve hours later, the water had changed phase and was a GAS. What happened to the water molecules?

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

Is powdered sports drink ionic or covalent ? 10pts !

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