Science Class 5 Matter

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

You are making a hot chocolate solution by mixing cocoa powder in hot water. If you want the cocoa powder to dissolve faster, which of the following should you do?

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A Heat the water and stir the cocoa powder in
B Use cold water and wait for a few hours
C Use a different type of solvent, like oil
D Stir slowly and wait for the cocoa powder to dissolve on its own

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Answer: A. Heat the water and stir the cocoa powder in

Heating the water is like giving those helpers an energy drink. They move much faster and hit the cocoa particles with more force, breaking them down quickly.
Stirring is like moving the helpers around so they don't get "crowded." It brings fresh water molecules into contact with the cocoa, rather than letting the same few molecules do all the work in one spot.

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You are making a hot chocolate solution by mixing cocoa powder in hot water. If you want the cocoa powder to dissolve faster, which of the following should you do?

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