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Phase change is when a substance changes it's phase to either a solid, liquid, or gas. Solids have the least molecular movement because the molecules are so tightly bonded that they only vibrate.
Liquids have the next fastest molecular movement, because the molecules tend to "flow" over each other. They are still bonded, like solids, but just not as tightly. This is why they move faster.
Gases, however, have the fastest molecular movement. The molecules "zip" around and move wherever they want. They are not bonded at all.
Hope this helps.
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What is he freedom of movement in molecules in a substance called?
The kinetic theory of molecules gives the idea about the movement and the behavior of the molecules in any different phase. The chemical reactivity of a particular molecule can be identified on the basis of kinetic theory of molecules. The phase of molecules changes and so changes it entropy ( movement of molecule in available space)
Which phase change is endothermic?
The 3 types of endothermic phase changes are the movement from solid to liquid, the movement from liquid to gas, and the movement form gas to plasma. Endothermic is the absorbing of heat.
Are phase changes physical or chemical in nature?
A phase change is a physical change. It is not a chemical change.
How does a solid differ from a liquid phase on the molecular level?
it puts its had in the a motor then tucks it out
What explains how particles act when their spacing and movement change?
Kinetic molecular theory
How does matter physically change when it changes its phase or state?
Its motion changes speed on the molecular level
What are the three phase changes?
The 3 types of endothermic phase changes are the movement from solid to liquid, the movement from liquid to gas, and the movement form gas to plasma. Endothermic is the absorbing of heat.
Which phase changes are endothermic?
Based on chemical properties exothermic phase changes are those that release energy. The exothermic phase changes are gas--> liquid, liquid --> solid, and gas--> solid. Looking at a phase diagram if you are going up the "stairs" the conversions require energy going down the "stairs" energy is released.
What are 2 phase changes that are endothermic or absorbing energy?
Solid to liquid (melting). Liquid to gas (vaporization). Solid to gas/ vapor (sublimation). That's three endothermic changes. :)
What is he freedom of movement in molecules in a substance called?
The kinetic theory of molecules gives the idea about the movement and the behavior of the molecules in any different phase. The chemical reactivity of a particular molecule can be identified on the basis of kinetic theory of molecules. The phase of molecules changes and so changes it entropy ( movement of molecule in available space)
What happens to the molecular movement as a gas turns into a solid?
It decreases. In gaseous phase the molecules are further apart than they are in the solid phase so although in solid phase the molecules are still moving minimally they haven't got the space to move around in that they would in the gaseous phase.
What are gerade and ungerade orbitals?
Gerade is a German word, meaning Even and Ungerade is its antonym meaning odd or uneven.
What is the molecular movement of melting?
the molecular movement is fluid. As a solid, movement was at a minimum, so as it is melting the molecules are moving more freely
How does kinetic theory explain particle movement spacing and ultimately phase changes?
ALEXIS ROCKS AND SO DOES DELANIE AND RACHAEL!!!
Does an increase in molecular weight speed up molecular movement?
no relation iz between molecular weight and movement which iz a function of temperature only.
Is molecule movement is greastest a solid?
Molecular movement in a solid is very minimal. Molecular movement in liquids and gases are greater than in a solid.
What does Molecular Motion mean?
When the temperature increases during a chemical or physical change the molecular movement increases. This means the molecular movement is faster. If the temperature decreases the molecular movement decreases. This means the molecular movement is slower.
