Acids and Bases Bernard and Thomas

What Is An Acid? Acids are a group of chemical compounds. Some acids are dangerous and can burn your skin or corrode metal. Some acids are harmless and are safe to taste.

Examples of Acids Battery acid Vinegar Citric acid (lemons, grapefruit, oranges) Lactic acid (sour milk, yogurt, cottage cheese)

What Can Acids Do? Acids can corrode metal. Acids can turn blue litmus to red. Acids can change the color of some vegetable dyes.

What Is A Base? A base is slippery or soapy in texture. Some bases are dangerous and can burn your skin. Some bases are harmless. Some bases, called Alkalis, can be dissolved in water.

Examples of Bases Chalk Baking Soda Milk

What Is An Indicator? Indicators are substances that change color depending on whether they are in an acidic or basic solution. Indicators are often made from plants.

What Do Indicators Do? Indicators change colors depending on how acidic or basic a solution is. Very acidic = red Neutral = yellow Very basic = blue

pH Paper pH paper, or litmus paper, is a strip of paper that you dip into science samples. It will show you if the sample is an acid, neutral, or a base.

pH Scale Scientists use a pH scale to see if the chemical is an acid or a base. The pH has 14 colors. 1-6 are acids, 7 is a neutral, 8-14 are bases.

What Is A Chemical Reaction? A chemical reaction occurs when atoms interact, exchange or share electrons, forming new chemicals.

Example Of A Chemical Reaction A chemical reaction occurs when you mix vinegar and baking soda. When you add those two together you make carbon dioxide gas. As you can see in this picture the reaction makes carbon dioxide which goes into the balloon and blows it up.

Chemical Quiz Test your knowledge on Chemical Reactions. Click on chemical reactions to take quiz.

Bibliography http://www.chem4kids.com/files/react_acidbase.html http://www.chemtutor.com http://www.teachnet.com http://www.funsci.com http://www.biochem.northwestern.edu http://www.madsci.org/