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Cohesion, Surface Tension, and Adhesion Cohesion causes water to form drops, surface tension causes them to be nearly spherical, and adhesion keeps the drops in place. | Polarity This is the atomic structure of Polarity. The red ball represents the negative charge, and the white represents the positive charges. | The pH Scale The following diagram shows the pH scale and the pH of some common items. Chemicals that are very basic or very acidic are called “reactive.” The pH scale measures how acidic or basic a substance is. It ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic, and a pH greater than 7 is basic. Each whole pH value below 7 is ten times more acidic than the next higher value. |
Cohesion, Surface Tension, and Adhesion
Cohesion causes water to form drops, surface tension causes them to be nearly spherical, and adhesion keeps the drops in place.
Polarity
This is the atomic structure of Polarity. The red ball represents the negative charge, and the white represents the positive charges.
The pH Scale
The following diagram shows the pH scale and the pH of some common items. Chemicals that are very basic or very acidic are called “reactive.” The pH scale measures how acidic or basic a substance is. It ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic, and a pH greater than 7 is basic. Each whole pH value below 7 is ten times more acidic than the next higher value.
It's Everywhere!
Chemistry is used in our everyday lives even when we don't know it. So take a minute and examine, and learn about Chemistry!