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Describe the motion of molecules of a substance change as the energy is increased?
Wiki User
∙ 14y ago
As energy increases molecules begin to move faster and shake more vigorously if you take energy out molecules do the opposite.
Wiki User
∙ 14y ago
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How do you describe each phase change?
Endothermic phase changes - the substance is gaining energy (being heated) and the molecules are getting more active.- solid to liquid: melting- liquid to gas: vaporization- solid to gas: sublimationExothermic phase changes - the substance is losing energy (cooling) and the molecules are slowing down.- gas to liquid: condensation- liquid to solid: freezing- gas to solid: depositionMemory helper: exo is like exit, and the heat energy exits the substance during an exothermic phase change.
How do energy and changes in energy change the state of matter?
When heating a substance the substance's molecules gain kinetic energy, this leads to chemical bonds being broken and thus a change of state.
When the molecules in a body move with increased speed is it a possible that the body will change from gas to a liquid?
Liquid to a gas
When the molecules in a body move with increased speed who will the body change?
they get heated up and evaporate
Why may the temperature of a substance change when energy is added?
Thermal energy of a substance is determined by the movement of the molecules and the potential energy of the arrangement of molecules. Heat transfer will stop when thermal equilibrium is reached. It depends upon the substance how long that takes.
Do substance like molecules change during a physical change?
No the substances like molecules donot chane during physical change .
Temperature a substance will change from liquid to gas?
Yes, only if the temperature of a substance is increased.
What are the signs of physical change and chemical change?
Physical Change: A change in which the atoms or molecules in a substance stay the same. Example: Ripping a piece of paper in half Chemical Change: A change that affects the type of molecules or atoms in a substance. Example: Burning wood The primary difference is that in a physical change, the composition of the substance remains the same, but in a chemical change, the composition of the substance changes.
How much molecules in a body move with increased speed it's possible that the body will change from a - Google Search?
How much molecules in a body move with increased speed it's possible that the body will change from a
Why is there no chemical equation to describe what happens when water evaporates?
That's because there is no chemical change. In most cases, there is no chemical change when a substance evaporates. The exception is very long molecules, which may break apart during evaporation.
When a substance undergoes a physical change what does not a change?
The chemical make up of a substance does not change. It must remain the same combination of atoms or molecules to be considered only a physical change.
What happens to the atom or molecules of a substance if it melts?
Nothing. Melting is a physical change and does not alter the chemical composition of a substance.
Describe the change in the position of molecules that takes as a material melts?
p
Is a broken glass a chemical change?
Physical change because the molecules have not changed to form a new substance.
What is the differences between chemical and physical change?
A chemical change involves a change in a substance's chemical properties (characteristics that describe how it interacts with other substances).A physical change involves a change in a substance's physical properties(characteristics that describe certain features one can see with their 5 senses).
When a physical change in a sample occurs which does not change?
Substance in the material Remain the same
How heat energy can change the states of matter?
When heating a substance the substance's molecules gain kinetic energy, this leads to chemical bonds being broken and thus a change of state.
