Water Molecules Flashcards
Temperature:
Measures the intensity of heat- the average speed of molecules rather than the total amount of heat energy in the body of matter.
How are hydrogen bonds broken?
Heat is absorbed.
What is released when hydrogen bonds form?
Heat.
What percent of our body weight is water?
66%-helps regulate your internal temperature.
Evaporative cooling:
When a substance evaporates the surface of the liquid remaining cools down.
Why is water less dense as a solid than a liquid?
Ice is less dense because of hydrogen bonds.
As water freezes, each molecule forms stable hydrogen bonds with __ neighbors.
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Solution:
Liquid that consists of a uniform mixture of two or more substances.
Solvent:
The dissolving agent.
Solute:
Substance that is dissolved.
Aqueous solution:
A solution where water is the solvent.
What kind of molecules dissolve in water?
Polar molecules dissolve in water. Non-polar do not.
Heat:
Amount of energy associated with the movement of atoms and molecules in a body of matter.
