Write four effects which heat can produce on a body.

Explanation

**Step-by-Step Text Solution:**

1. **Change of State**: Heat can cause a change in the state of a body. For example, when heat is applied to a solid, it can melt into a liquid (like ice melting into water), and further heating can convert that liquid into gas (like water boiling into steam).

2. **Change in Volume**: Heat can also affect the volume of a body. When a substance is heated, its particles gain energy and move apart, causing the substance to expand. This is why materials like metals and gases expand when heated.

3. **Chemical Change**: Heat can initiate chemical reactions, leading to chemical changes in a body. For instance, heating can cause substances to react with each other, resulting in new products (like baking bread or burning wood).

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