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Showing posts with label is matter around us pure. Show all posts
Showing posts with label is matter around us pure. Show all posts
Tuesday, October 1, 2019
What is the size of particle of colloidal solution
Between 10 to the power minus 7m To 10 to the power minus 5 cm (100NM -1 NM)
Chemical changes
Rusting of iron cooking of food digestion of food and burning of a candle are chemical changes
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