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11 questions
which of the following is a reversible change.
Melting of a chocolate
Curdling of milk
Corrosion of metal
Tearing of paper
Which of the following is not an irreversible change?
Frying food products
Boiling vegetables
Melting of wax
Baking biscuits
What is an example of a reversible change?
Freezing water
Burning wood
Rotting fruit
Exploding fireworks
Which of the following is a physical change?
Burning coal
Grinding coffee beans
Rusting of iron
Decomposing food
What is an example of a chemical change?
Boiling water
Crushing a can
Baking a cake
Freezing ice
What is an example of a physical change?
Boiling water
Crushing a can
Grinding coffee beans
Freezing ice
What is an example of a chemical change?
Boiling water
Crushing a can
Baking a cake
Freezing ice
Digestion of food is an example of ___________.
All the changes in nature are reversible
TRUE
FALSE
A reversible change is a permanent change
TRUE
FALSE
substances increase in size of heating
TRUE
FALSE
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