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6. Observe what happened in the material after 48 hours.
7. Write your observations in your notebook.
Table 1. Investigating Material
Material
freshly cut apple/eggplant/potato
apple/eggplant/potato (material)
after 48 hours
Observations
Glass A
Glass B
Guide Questions:
1. What is the color of the freshly cut apple/eggplant/potato in Glass
and Glass B?
2. What is the color of the apple/eggplant/potato after 48 hours in Gla
A and Glass B?
3. What is the effect of exposing the slice of the material in oxygen
glass A and in Glass B after 48 hours?
4. What is the effect of putting Vitamin C ( Vitamin C acts as antioxid
that prevents further oxidation of apple/eggplant) in an apple/eggpl
in Glass B?