Question

При нагревании медной пластины масса её увеличилась. Объясните почему?

Answer 1

За счет кислорода , находящегося в воздухе.

Answer 2

Explanation of the Phenomenon

When a copper plate is heated, its mass increases. This phenomenon can be explained by the principles of thermal expansion. Thermal expansion is the tendency of matter to change its shape, area, and volume in response to a change in temperature.

Explanation Using Search Results

The increase in mass of the copper plate when heated can be attributed to the thermal expansion of the material. As the temperature of the copper plate increases, the average amplitude of the copper atoms' vibrations also increases. This causes the atoms to move further apart, leading to an increase in the overall volume of the material. Consequently, the mass of the copper plate increases due to the addition of thermal energy, which results in the expansion of the material.

Conclusion

In summary, the increase in mass of the copper plate when heated is a result of thermal expansion, where the material expands as its temperature rises, leading to an increase in its overall volume and mass.