Activity 2
Directions: a. Take few raisins and soak in plain water for about four to five hours.
b. Raisins swell up.
c. Take some of these swollen raisins and put them in salt solution for about one or two
hours.
d. You observe that the raisins shrink.
Qn 1. Explain why did the raisins swell up when soaked in water and shrink when
kept in salt solution.
2. Name the main processes involved in this activity
Answers
Answered by
6
Answer:
A phenomenon called endosmosis takes place when raisins are placed in water for few hours. When raisins are soaked in water, they swell. All this is due to the process of osmosis.
Answered by
7
Answer:
when dry raisins are put in plain water for some time, they swell up as water will move from higher concentration to lower concentrations and the process is called osmosis
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