Activity In the activity, you will balance two equations at each level: easy, medium, and hard. The equations to balance are listed below. Solve these equations and write their answers in the space provided. Easy 1. K + Br2 - KBr 2. Sb + O2 - Sb406 Medium 1. Na + H2O NaOH + H2 2. KNO3 KNO2 + O2 Hard 1. NH3 + O2 - NO + H2O 2. GHOH + O2 – CO2 + H2O

Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges