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Are molecules attracted by charges

Punch a small hole about the size of a pencil lead in the bottom of each cup with the tip of a ballpoint pen. Cover the tip of the pen with a cap. [Pg.20]

Cover the small hole of one of the cups with your finger. While holding the cup over the sink add about one-quarter cup of water to it. Rub the covered plastic ballpoint pen in your hair or on a sweater for about thirty seconds. Uncover the hole to allow a stream of water to flow. Move the middle of the ballpoint pen close to the thin stream of water, but do not touch the stream. [Pg.20]

Is the thin stream of water bent by the plastic ballpoint pen Does the stream of water move towards the pen How close does the pen have to be to see the stream of water bend Is the stream of water bent more as you move the pen closer to the stream What happens when you touch the pen to the stream of water Is the thin stream of cooking oil bent by the plastic pen  [Pg.21]

Oil molecules are made of mostly carbon and hydrogen atoms. Oil molecules are nonpolar. A nonpolar molecule does not have a positive and negative end. Nonpolar molecules are called neutral molecules. [Pg.21]

Use other plastic things to bend the water. A plastic comb will work. Do some plastic objects move the stream of water more than others  [Pg.22]


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