As two chemicals react, the chemical bonds between the atoms in each react and break. Then, new bonds form. We call this process a chemical change or chemical reaction.

True

False

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

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.