The following activities were performed in the laboratory by groups of pupils.
Study the activities and answer the questions that follow.
i) Camphor was heated.
ii) Wood was burnt.
iii) Iron nails were heated strongly.
iv) Sodium chloride was dissolved in water.
i)
Which of the following activities are:
(α) chemical processes;
(β) physical processes.
ii)
Give two reasons why the activities listed in:
(α) (i)(α) are chemical processes;
(β) (i)(β) are physical processes.
iii)
Give two examples of physical change that take place in your environment.
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