Question

Fill in the blanks:

Ice, water and water vapour look different_____ properties but they are _____ the same.

• A. Physical
• B. Chemically

Answer 1

1. Physical change: A physical change is one in which the shape, size, appearance or state of a substance may alter, but its chemical composition remains the same.
2. Chemical change: A change in which the composition of a substance is altered is called a chemical change.
3. Water is found in three states. They are Solid (ice), Liquid (water), and Gas (water vapour).
4. These three states of water are three physical forms of water.
5. Therefore, there is no change in the chemical composition of water.

Therefore, Ice, water and water vapour look different physical properties but they are chemically the same.