Volume-temperature relationship

The volume-temperature relationship states that, for a gas at constant pressure, increasing its temperature causes the gas to expand and occupy more space (higher volume). Conversely, lowering the temperature makes the gas contract and take up less space (lower volume). This occurs because heating energizes the gas particles, making them move faster and push outward, while cooling slows particles down, allowing them to settle closer together. This principle is fundamental in understanding how gases behave in different conditions and is described by Gay-Lussac's Law in chemistry.