Definition: In any chemical process, matter is neither lost nor gained. Example: reactants before a chemical reaction must equal the products after the reaction, i. e. 2H2 + O2 →
2H20

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Abaseball is thrown from the outfield toward the catcher. when the ball reaches its highest point, which statement is true? (a)its velocity is not zero, but its acceleration is zero. (b) its velocity and its acceleration are both zero. (c) its velocity is perpendicular to its acceleration. (d) its acceleration depends on the angle at which the ball was thrown. (e) none of the above statements are true.

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical