NCERT Solutions for Class 6 Science Chapter 5
Important NCERT Questions
Class 6th Chapter 6 Separation of Substances
NCERT Books for Session 2022-2023
CBSE Board and State Board
Questions No: 10
Lemonade is prepared by mixing lemon juice and sugar in water. You wish to add ice to cool it. Should you add ice to the lemonade before or after dissolving sugar? In which case would it be possible to dissolve more sugar?
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We should add sugar before adding ice. Sugar dissolves in warm water more quickly than in cold water. We can dissolve more sugar before mixing ice in water.
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It’s better to add ice to the lemonade after dissolving the sugar in water. Dissolving sugar in water is easier when the water is warm or at room temperature as warm water holds more dissolved solids than cold water. If you add ice before dissolving sugar, the cold temperature of the water might make it more challenging to dissolve additional sugar as the cold water has limited capacity to dissolve solids compared to warm water. Therefore, dissolve the sugar in water first, then add ice to cool the lemonade.