Putting money to use in something that offers potentially profitable returns m a: income b: credit c: budget d: saving account

In an oxidation-reduction reaction, oxidation is what happens when a reactant

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.