1st June 21
Std :7
Sub :Science
Students, some pictures and its names are given in the worksheet. Classify them in physical change and Chemical change. Make two columns in your notebook and write only names in respective column. No need to draw pictures.
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Chemical change:
lighting a match
mixing vinegar and baking soda
burning wood
digesting food
frying an egg
baking a cookie
a rusting bike
disolving sugar
Physical change:
cutting grass
freezing water
crushing a can
cutting an apple
melting ice
breaking a mirror
ripping paper
burning a candle is both physical and chemical change as it melts into wax(physical) , emits gasses while burning (chemical)
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