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What happens to the kinetic energy of a substance while undergoing a phase change?
Wiki User
∙ 12y ago
It depends on what phase change they are undergoing. If it were going from a solid to a liquid, then the kinetic energy would be greater. Same as if it were going from a liquid to a gas. However, if it were going from a liquid to a solid (or a gas to a liquid), then the kinetic energy would decrease.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoThe average kinetic energy (temperature) remains constant, as shown on the graph, there is a plateau.
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True or false When frozen water melts it is undergoing a physical change?
Actually it is undergoing a crappy change.
Can a physical change change what a substance is?
a physical change will only alter the appearance but will NOT change the substance to another substance =)
What happens when a substance goes directly from a solid state to a gas state as dry ice does?
It's called sublimation. Its undergoing a phase change. -APEX:)
What change forms a new substance?
compound
What is a change that alters the form or appearance of a substance but does not make it into other substance?
It is considered a physical change. A chemical change involves chemical reactions that change the substance into another substance. A physical change typically only modifies the form or phase.
When a substance is undergoing a chance of state the temperature of the substance does not change until the?
change is complete
A substance that speeds up a chemical reaction without undergoing a permanent change itself is?
A substance that speeds up a chemical reaction without undergoing a permanent change itself is a catalyst.
What is true for a substance undergoing a phase change?
It will change state from a solid to a liquid to a gas and finally to a plasma.
Substance that speeds up a chemical reaction without undergoing a permanent change -?
Catalyst
What does thermochromatic mean?
it refers to a substance undergoing a reversible change of colour when heated or cooled
What happens to kinetic energy of the particles of a substance as the substance changes from a liquid to a gas?
The faster the molecules of a substance are moving, the warmer that substance is, because temperature is really a measurement of the average kinetic energy of the molecules in a substance or object. For a substance to evaporate, or change from a liquid to a gas, it has to become warmer. That means that the kinetic energy of the molecules increases.
Does a phsical change or chemical change affect the matter in an object?
A physical change is reversible and does not affect the composition of a substance. On the other hand, chemical change is irreversible and permanent. A substance undergoing a chemical change forms a new substance which has different composition than the original substance.
How do you identify the change of state a substance is undergoing?
through it's boiling, melting, and freezing point.
Is sugar changing to alcohol a physical or chemical change?
Anything changing to a substance with a different identity is undergoing a chemical change.
How does a substance 's temperature change when the average kinetic energy of it's particle increases?
As the average kinetic energy of a substance increases, the temperature will increase.
What is an example of a physical change tarnishing rusting burning or melting?
Melting is an example of a physical change because it does not change the chemical composition of the substance undergoing the change. Tarnishing, rusting, and burning are examples of chemical change because they are caused by chemical reactions, which change the chemical composition of the substances undergoing the change.
Is temperature change chemical?
No. Temperature is not a change of any sort. It is a measure of the average kinetic energy of the particles in a substance.
