Classify the changes involved in the following processes as physical or chemical changes:
Dissolving sugar in water
Burning of coal
Melting of wax
Beating aluminium to make aluminium foil
Digestion of food
Explain why burning of wood and cutting it into small piece are considered as two different types of changes.
Fill in the blanks in the following statements:
Changes in which only _____ __ properties of a substance change are called physical changes.
State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook.
Cutting a log of wood into pieces is a chemical change. (True/False)