With decrease in heat, solids change to liquids and liquids change to gaseous state.

Answer

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement claims that with a decrease in heat, solids change to liquids and liquids change to gases.

2. **Analyzing the Effect of Heat**: When heat is decreased, the kinetic energy of the particles in a substance also decreases. Kinetic energy is the energy of motion, and as it decreases, the motion of the particles becomes restricted.

3. **Behavior of Solids**: In solids, the particles are closely packed and have limited movement. When heat is decreased, the particles lose energy and move even less, causing them to come closer together. This means that solids do not change to liquids; instead, they remain solid or may become more solid.

4. **Behavior of Liquids**: For liquids, when heat is decreased, the kinetic energy of the particles also decreases. This results in the particles moving closer together, which means that liquids do not change to gases; they may become more viscous or even solidify if enough heat is removed.

5. **Conclusion**: Therefore, the statement is false. Solids do not change to liquids, and liquids do not change to gases when heat is decreased. Instead, the opposite occurs: decreasing heat leads to solids becoming more solid and liquids becoming more solid or viscous.

**Final Answer**: The statement is false.

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