Question

Почему газы при нагревании расширяются больше чем твёрдые тела? ​

Answer 1

Ответ:

Изменение линейных размеров тела при нагревании пропорционально изменению температуры. Подавляющее большинство веществ при нагревании расширяется. Это легко объяснимо с позиции механической теории теплоты, поскольку при нагревании молекулы или атомы вещества начинают двигаться быстрее.

Answer 2

Why do gases expand more than solids when heated?

When a substance is heated, its particles gain energy and move faster, leading to an increase in their kinetic energy. This increase in kinetic energy causes the particles to collide with each other more frequently and with greater force. As a result, the particles move further apart, leading to an expansion of the substance.

Gases, in particular, tend to expand more than solids when heated due to their unique properties. Unlike solids, which have tightly packed particles that vibrate in fixed positions, gases have particles that are much more spread out and move freely in all directions. This means that when gases are heated, the increased kinetic energy of the particles causes them to move even further apart, resulting in a greater expansion compared to solids.

The expansion of gases can be explained by the kinetic theory of gases, which states that the pressure exerted by a gas is directly proportional to the average kinetic energy of its particles. When the temperature of a gas increases, the average kinetic energy of its particles also increases, leading to an increase in pressure and volume. This relationship is described by the ideal gas law, which states that the product of pressure and volume is proportional to the product of the number of gas particles and the temperature.

In summary, gases expand more than solids when heated because their particles are more spread out and move freely, allowing them to move further apart when their kinetic energy increases. This expansion is a result of the increased pressure and volume of the gas due to the higher average kinetic energy of its particles.