Problem: Which situations show chemical change and physical change?
Materials: table, chart, rubber band, rotten vegetable, barbecue stick, sugar, spoon,candle, peanuts, mortar and pestle, wire, ammonia and vinegar.Try and study the following situations.
a. stretching a rubber band without breaking it.
b. vegetable infected with pests.
c. tissue paper being burned.
d. breaking barbecue stick into 3 pieces.
e. cutting a sheet of cardboard into 4.
f. combining ammonia and vinegar.
g. smoke produced while heating the sugar.
h. food left outside the refrigerator gets spoiled.
i. pounding a teaspoon of peanuts.
j. bending a piece of wire to form a circle.ctorncerate
Materials: table, chart, rubber band, rotten vegetable, barbecue stick, sugar, spoon,candle, peanuts, mortar and pestle, wire, ammonia and vinegar.Try and study the following situations.
a. stretching a rubber band without breaking it.
b. vegetable infected with pests.
c. tissue paper being burned.
d. breaking barbecue stick into 3 pieces.
e. cutting a sheet of cardboard into 4.
f. combining ammonia and vinegar.
g. smoke produced while heating the sugar.
h. food left outside the refrigerator gets spoiled.
i. pounding a teaspoon of peanuts.
j. bending a piece of wire to form a circle.ctorncerate
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Answer:
a. physical change
b. physical change
c. chemical change
d. physical change
e. physical change
f. chemical change
g. chemical change
h. chemical change
i. physical change
j. physical change
hope it helps :)