Fill in the blanks in the following statements:
- When carbon dioxide is passed through lime water, it turns milky due to the formation of _________.
- The chemical name of baking soda is _________.
- Two methods by which rusting of iron can be prevented are _________ and _________.
- Changes in which only _________ properties of a substance change are called physical changes.
- Changes in which new substances are formed are called _________ changes.
Answer:
- When carbon dioxide is passed through lime water, it turns milky due to the formation of calcium carbonate.
- The chemical name of baking soda is sodium bicarbonate/ sodium hydrogen carbonate.
- Two methods by which rusting of iron can be prevented are painting and galvanising.
- Changes in which only physical properties of a substance change are called physical changes.
- Changes in which new substances are formed are called chemical changes.
