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Purpose: Investigate which metals and which wet cell food source makes a better battery Materials: Lemon Potato Copper Zinc Steel Multimeter Connecting wires Metric Ruler Hypothesis: When placed in a ____________ at a distance of __________ the __________ and __________ metals will make the best battery. Safety: Wear goggles and wash hands after lab.
Procedure: (8 steps) Preparation of Lemon and Potato Soften the potato and lemon to increase juice production Use 1cm, and 2 cm distances between electrodes
Bar Graphs (2) StackedBar 1 graph for the lemon and 1 graph for the potato X axis C-Z, Z-S, S-C Y axis Voltage 6 bars for each graph 1 bar for1 cm and 1 for 2cm
Questions • What combination of metals and distance produced the highest voltage? • If you change only the distance but use the same metal strips, what is the effect on voltage? 3. Which makes a better battery? Explain why.