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What During a phase change the temperature of a substance .?
The temperature* remains unchanged. * The heat (energy) content changes.
What happen to the temperature of a substance during a phase change?
The temperature* remains unchanged. * The heat (energy) content changes.
How does the energy of a substance change during an exothermic change?
During an exothermic change, energy is released from the substance in the form of heat to the surroundings. This results in a decrease in the internal energy of the substance, leading to a decrease in its temperature.
How does energy changes as a substances?
Energy can change when a substance undergoes a phase change (such as melting or vaporization) or a chemical reaction. During these processes, energy is either absorbed (endothermic) or released (exothermic) as the internal structure of the substance changes. This energy change is due to the breaking or forming of bonds between atoms, resulting in a change in the overall energy content of the system.
A substance loses energy during what two processes?
A substance loses energy during cooling and evaporation processes. During cooling, heat is transferred away from the substance, lowering its temperature. During evaporation, the substance loses energy as molecules escape from its surface, causing it to undergo a phase change from liquid to gas.
What happens to energy during a change of state Why is it physical change?
During a change of state, energy is either absorbed or released as heat. This is because the particles in a substance need energy to break their bonds and move into a new arrangement. A change of state is a physical change because it does not involve a change in the chemical composition of the substance, only its physical properties.
Latent heat is the energy required for 1 kg of a substance to change?
Latent heat is the energy required for 1 kg of a substance to change ___________. phase
What The heat of fusion of a substance is the energy measured during a?
The heat of fusion of a substance is the energy required to change a unit mass of the substance from a solid to a liquid state at its melting point. It is measured during the phase transition process when the substance absorbs heat energy to break the intermolecular forces holding its particles together in the solid state.
Why does temperature no change during energy phase change?
During a phase change, the heat transferred to a substance is used to break intermolecular forces (latent heat), and thus the temperature of the substance does not change. The opposite also occurs: heat is transferred from a substance during a phase change without a decrease in temperature as intermolecular bonds form.
The behavior of a substance during a phase change?
neither ansorbs nor releases energy
What describes the behavior of a substance during a phase change?
It either absorbs or releases energy
What do you think will happen to the temperature of a substance during a phase change?
During a phase change, the temperature of a substance remains constant. This is because the energy being absorbed or released is used to break or form intermolecular bonds, rather than to change the temperature of the substance.
