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Water and solutions

Properties of water, solutions, suspenisons, etc.

The chemical formula for water is H2O
Water is made up of one oxygen atom bonded with two hydrogen atoms
Why is water polar? Each end of the molecule has a slight electric charge.
The positive hydrogen ends of one water molecule atttract to the negative oxygen ends of another water molecule.
surface tension teh tightness across thece of water caused by water molecules pulling on each other.
capillary action is due to the attraction among molecules of water and surrounding materials
solution a mixture that forms when one substance dissolves another
solvent the substance that does the dissolving
solute the substance that is present in a solution in a smaller amount
water is called the universal solvent because it can dissolve so many substances
list the three states of matter solid, liquid, gas
evaporation occurs as water molecules at the surface of a liquid absorb energy and turn into a gas.
condensation occurs when gaseous water moleules slow down, losing energy, and turn into a liquid
specific heat the amount of thermal energy required to raise the temperature of one kilogram of a substance by one degree Celcius.
Why does ice float? It is less dense than liquid water.
What is a suspension? a mixture in which particles can be seen and easily separated by settling or filtration.
What is a solution? a well mixed mixture
How can you separate salt from water? by evaporation
In a solution, the ________ is dissolved by the solvent. solute
Created by: sohare3