Students will examine the environmental impact of batteries on plant life utilizing qualitative and quantitative measurements. This power source has direct short term benefits, but we often fail to consider the long term problems associated with batteries. The electrolytes used in batteries are often strong acids that easily allow for the transfer of ions. It is not practical to perform hands-on activities with strong electrolytes, but utilizing safer materials such as lemon juice or vinegar can simulate their impact on the environment. Review the purpose of electrolytes in batteries and discuss their physical characteristics.
Students can research the different electrolytes used today.
Have students discuss the possible environmental effects of the improper disposal of batteries. Water' each plant with the chosen electrolyte and record the daily changes that the electrolyte has on the plant. Remember to keep one plant as a control. Continue to water it normally so that it can be compared with the other electrolytes used.