Chemical change can be identified by a change in shape and size.
A chemical change in a solution can be identified by
Can unbalanced force can cause a change in shape and size of objects?
While teaching the topic of physical and chemical changes, Mahima’s teacher listed the conditions that take place during a change.
I. Change in state
II. Change in colour
III. Evolution of a gas
IV. Change in temperature
He then asked Mahima to identify the conditions based on which it can be said with certainty that a particular change is chemical in nature.
Among the changes that are listed by the teacher, which changes should be selected by Mahima?