Question

Формули плавлення тіла,пароутворення та нагрівання тіла

Answer 1

$Q=Cm(t_2-t_1)$ - нагревание
$Q=Lm$ - парообразование
$Q=$ λ $m$ - плавление

Answer 2

Formulation of Melting, Vaporization, and Heating of a Substance

Melting: When a solid substance is heated, it absorbs energy, causing the particles to vibrate more vigorously. As the temperature continues to rise, the particles eventually have enough energy to overcome the forces holding them in a fixed position, and the solid turns into a liquid. This temperature at which a solid turns into a liquid is called the melting point. At this point, the substance absorbs heat without a corresponding increase in temperature.

The process of melting can be represented by the equation: Q = m * L Where: - Q is the heat absorbed during melting, - m is the mass of the substance, and - L is the specific latent heat of fusion.

Vaporization: When a liquid is heated, its particles gain enough energy to escape the attractive forces of the other particles and become a gas. This process is called vaporization. The temperature at which a liquid turns into a gas is called the boiling point. Similar to melting, during vaporization, the substance absorbs heat without a corresponding increase in temperature.

The heat absorbed during vaporization can be represented by the equation: Q = m * L_v Where: - Q is the heat absorbed during vaporization, - m is the mass of the substance, and - L_v is the specific latent heat of vaporization.

Heating of a Substance: When a substance is heated, its temperature increases. The amount of heat required to raise the temperature of a substance depends on its mass, specific heat capacity, and the temperature change. The relationship between heat, mass, specific heat capacity, and temperature change is given by the equation: Q = m * c * ΔT Where: - Q is the heat absorbed, - m is the mass of the substance, - c is the specific heat capacity, and - ΔT is the change in temperature.

These processes are fundamental to understanding the behavior of substances when subjected to heat.