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Which of the changes of state shown in the figure require an increase in energy answers?
Wiki User
∙ 7y ago
Evaporation uses energy to change from a liquid to a gas. Melting uses energy to change from a solid to a liquid. Condensation releases energy to change from a gas to a liquid. Freezing releases energy to change from a liquid to a solid.
Wiki User
∙ 8y ago
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What is the changes in kinetic energy as a substance is heated to its melting point?
The kinetic energy increase.
How do changes in energy and temperature influence chemical changes?
The reaction rate is dependent on temperature (increasing the temperature the reaction rate increase) and activation energy.
Do changes in velocity and mass have the same effect on kinetic energy?
No, changes in velocity have a greater effect on kinetic energy than changes in mass. Kinetic energy is directly proportional to the square of the velocity, while it is only proportional to the mass. A doubling of velocity will result in a fourfold increase in kinetic energy, while doubling the mass will only double the kinetic energy.
What happens to molecular energy when a substance changes states?
The molecular energy will usually increase or decrease, depending on the exact situation.
What happens to a substance as its thermal energy increases?
As thermal energy increases, the substance's particles move faster, leading to an increase in temperature. Eventually, the substance may undergo a phase change (e.g., melting or boiling) or undergo chemical reactions if the increase in energy is significant enough.
Identify to changes of state that require energy to be used and two changes of state that require the release of energy?
Changes of state that require energy: melting (solid to liquid) and vaporization (liquid to gas). Changes of state that release energy: freezing (liquid to solid) and condensation (gas to liquid).
What all changes of the state of matter require?
heat energy
What are two changes in state that require the release of latent potential energy?
Two changes in state that require the release of latent potential energy are condensation, where gas turns into liquid and releases energy, and freezing, where liquid turns into solid and releases energy.
What is the changes in kinetic energy as a substance is heated to its melting point?
The kinetic energy increase.
When you increase energy in one form what happens to the energy in the other forms?
it changes form
What are the types of phases change that require energy?
The types of phase changes that require energy are melting (solid to liquid), sublimation (solid to gas), and evaporation (liquid to gas). These phase changes require energy input to break the intermolecular forces holding the particles together in a particular phase.
What are changes of state that require energy?
Melting, vaporization, and sublimation are changes of state that require energy. During these processes, energy is used to overcome intermolecular forces holding the particles together so that they can move more freely.
What changes of state require energy?
Sublimation, melting, and vaporization are three changes of state which require energy.
How do changes in energy and temperature influence chemical changes?
The reaction rate is dependent on temperature (increasing the temperature the reaction rate increase) and activation energy.
Do changes in velocity and mass have the same effect on kinetic energy?
No, changes in velocity have a greater effect on kinetic energy than changes in mass. Kinetic energy is directly proportional to the square of the velocity, while it is only proportional to the mass. A doubling of velocity will result in a fourfold increase in kinetic energy, while doubling the mass will only double the kinetic energy.
Is more energy enters a system then leaves it just causes a what?
If more energy enters a system than leaves it, it causes an increase in the internal energy of the system. This could lead to an increase in temperature, changes in pressure, or other internal changes depending on the nature of the system.
What happens to molecular energy when a substance changes states?
The molecular energy will usually increase or decrease, depending on the exact situation.
