The molecules in an ice cube arrange themselves so the mutual forces of attraction between the molecules is stronger then they are in liquid form. These forces can be overcome by adding energy to the ice cube, which starts the molecules jiggling until they break free. When they break free you have water. So energy isn't released by a melting ice cube, it is absorbed. The amount of energy that must be absorbed to just melt the ice (overcome those strong attractive forces), without raising the temperature is called the "latent heat of fusion". Every solid that can be melted to a liquid form has a "latent heat of fusion". This is a number you can look up and is different for different substances. In the reverse situation, when water turns to ice, the water releases energy (latent heat of fusion again)and the molecules slow down enough to be captured by the stronger forces. In the South, when a freeze is coming, the farmers will spray their crops with water because before it can turn to ice it first releases the latent heat of fusion energy. This will keep the crops slightly above freezing for a little longer then without the water spray and they hope its long enough.
True ^.^
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The forms of energy that do work is kinetic energy.
no because it is a metal single Ag is an atom
No.
It is false that an ice cube melts when it's mechanical energy increases.
True. When a substance loses energy, its temperature can decrease, while when it absorbs energy, its temperature can increase. This is because energy is transferred as heat, which can lead to changes in temperature.
The energy decreases the molecular motion and the kinetic energy of the substance.
Melting is an endothermic change, because ice absorbs energy from its surroundings as it melts.
True, when a gas changes into a liquid, it releases energy, typically in the form of heat. This process is called condensation.
When a substance absorbs energy, its internal energy increases, which can lead to a rise in temperature, a change in phase (e.g., from solid to liquid), or chemical reactions. Absorbing energy typically causes the substance's particles to move more quickly or rearrange themselves in a way that stores the additional energy.
No that is false. Increasing temperature favors the reaction that absorbs energy, not that releases energy as heat.
True black absorbs all colors.
True ^.^
Electron X can transition between energy levels by either absorbing or emitting a photon. The energy change corresponds to the photon's energy (ΔE = hf), where h is Planck's constant and f is the frequency of the photon. The transitions between energy levels are quantized and follow the laws of quantum mechanics.
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A: True