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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.
What else can I help you with?
Alkaline pyrogallol absorbs oxygen when used on germinataing seeds. True or false?
True ^.^
Can matter both absorbs and reflect light?
TRUEEEEEEEEEEEEEEEEEEEE!:]
Which forms of energy can do work?
The forms of energy that do work is kinetic energy.
Can silver melt?
no because it is a metal single Ag is an atom
Is it true that the hotter a substance is the less energy its molecules have?
No.
True or false An ice cube melts when it's mechanical energy increases?
It is false that an ice cube melts when it's mechanical energy increases.
When a substance loses or absorbs energy its temperature can change true or false?
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.
Which may be true for a substance that absorbs energy?
The energy decreases the molecular motion and the kinetic energy of the substance.
What statement about the energy of a phase change is true?
Melting is an endothermic change, because ice absorbs energy from its surroundings as it melts.
Is it true or false that a gas absorbs energy as it changes into a liquid?
True, when a gas changes into a liquid, it releases energy, typically in the form of heat. This process is called condensation.
What is true for a substance that absorbs energy?
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.
Is it true when a reaction is at a equilibruim increasing the temperature favors the reaction that releases energy as heat?
No that is false. Increasing temperature favors the reaction that absorbs energy, not that releases energy as heat.
What is the pigment that absorbs all colors?
True black absorbs all colors.
Alkaline pyrogallol absorbs oxygen when used on germinataing seeds. True or false?
True ^.^
Electron X can change to a higher energy level or a lower energy level Which statement is true of electron X?
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.
Can matter both absorbs and reflect light?
TRUEEEEEEEEEEEEEEEEEEEE!:]
A car crushing in a collision absorbs some of the force of the crash A True B False?
A: True
