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Chp5 Chem1

chemical bonds

QuestionAnswer
A water molecule is made up of 2 hydrogen atoms and one oxygen atom
Water is held together by covalent bonds, this means that the atoms share electrons
What makes a water polar? Oxygens attraction for electrons is stronger than hydrogens attraction for electrons.
Describe a polar water molecule. Slightly negative near oxygen atom and slightly positive near hydrogen atoms.
What causes water surface tension ? The attraction of water molecules.
Describe why water cannot dislove all substances made of inoic bonds? The bonds are too strong to be pulled apart.
Why is water able to dissolve sodium chloride (salt)? Polar areas of water molecules attracts ions of salt that have an opposite charge.
What is a solute? the substance being dissolved
What is a solvent? the substance doing the dissolving
What is solubility? The mass of a substance that will dissolve in a certain volume of water at a certain temperature.
Created by: susan.walters