Friday, May 29, 2009

This week in science we began learning the basics of chemistry. We learned that everything is made up of extremely small things called atoms. Theses atoms are made up of protons, electrons, and neutrons. They can be charged positively, negatively, or neutrally. When a balloon is rubbed on someones head their hair stands up. This is because the hair lost its protons and "wants to get the back" from the balloon. The hair goes toward the balloon because there are some protons still in the air and eventually all of them will come nack from the balloon. When the protons return to the hair, the hair will stop standing up and go back to normal.

We also learned about elements. Elements are classifications of the number of atoms in a group of them. Elements have a certain number of atoms so when the number of atoms changes, the element changes too. The atoms like to have a balanced number of electron and protons. When an atom cloud doesn't have an even number of something, it will do anything to balance itself out. The atoms will combine with other atoms electrons or protons. When atoms combine it becomes a differrent element because the number of atoms have changed.

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