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Friday, November 16, 2012

Chemistry Dogs!

These dogs are SO well-behaved!

Remember, atoms are called ions if they lose an electron.
Atoms usually have the same number of protons and electrons and have a net neutral charge.  So if an atom loses an electron to another atom, those atoms are no longer "neutral."

Chemical bonds hold atoms together because they share electrons; and those held-together atoms make up a molecule.
(Hydrogen bonds hold water molecules together, and are more easily broken than chemical bonds.)

Polar molecules are molecules in which one side is more negative therefore making the other side more positive.
Water molecules are polar because the oxygen pulls more and gains more electrons (Oxygen and hydrogen still share electrons -- this is what causes the chemical bond -- but the oxygen keeps more of them.)

Water molecules can dissolve substances that have polar molecules or ionic molecules, but not non-polar molecules.

►See diagram of a water molecule.

Aren't they sweet!  =)