Table 1
Type of Salt Time to dissolve (minutes)
Refined salt
Rock salt
Guide Questions:
1. How much time did it take for the refined salt to dissolve completely?
Ans. ________________________________________________________________
2. How much time did it take for the rock salt to dissolve completely?
Ans. ________________________________________________________________
3. Why is this so?
Ans. ________________________________________________________________
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Answer:
1. 2-3 min in room temp water, 1-2 min in hot water