Temperature and Kinetic Energy
When the temperature of a substance increases, the average kinetic energy of its particles also increases. This is because temperature is directly related to the average kinetic energy of particles in a substance.

Increased Kinetic Energy
- As the temperature rises, the particles in a substance gain more energy, causing them to move faster and collide more frequently.
- This increased movement and collisions lead to a higher average kinetic energy for the particles in the substance.

Lighter Particles
- The increase in kinetic energy due to higher temperature also affects the mass of the particles.
- According to the theory of relativity, as the kinetic energy of a particle increases, its mass also increases.
- However, this increase in mass is very small and negligible for everyday temperatures.
- Therefore, in practical terms, the particles do not become "heavier" as the temperature increases. Instead, they continue to move faster and exhibit behavior associated with higher kinetic energy.
In conclusion, as the temperature of a substance increases, the average kinetic energy of its particles also increases, leading to faster movement and more frequent collisions. This does not make the particles "heavier" but rather causes them to behave as if they have higher kinetic energy.

Good morning mam I'm no class 6