Select the correct option:
1. Water is kept in a freezer and changes into ice (Change – A). The ice is then heated and changes back into water (Change – B). The following statements pertain to these changes. Choose the correct one.
2. A steel spring is stretched by applying a force (Change – A). After the force is removed, the spring returns to its original shape (Change – B). The following statements pertain to these changes. Choose the correct one.