Question

In the table below, come up with two examples each for a physical change, and a chemical change. Give examples that have not already been provided.

Answer 1

Certainly! Here are two examples each for a physical change and a chemical change:

**Physical Change:**
1. **Melting of Ice:** When ice melts, it transitions from a solid state to a liquid state, but its chemical composition (H₂O) remains unchanged.
2. **Dissolving Sugar in Water:** When sugar is dissolved in water, it breaks down into individual molecules, but no new substances are formed, and the sugar can be recovered by evaporating the water.

**Chemical Change:**
1. **Rusting of Iron:** This process involves the reaction of iron with oxygen and moisture in the environment to form iron oxide (rust), which is a different substance.
2. **Burning of Wood:** When wood is burned, it reacts with oxygen to produce ash, carbon dioxide, and water vapor. The original chemical structure of the wood changes completely.

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