They are everywhere.. In your food In your house EVEN IN YOU!!!!!

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They are everywhere.. In your food In your house EVEN IN YOU!!!!!

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They are everywhere.. In your food In your house EVEN IN YOU!!!!!

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They are everywhere.. In your food In your house EVEN IN YOU!!!!!

They are everywhere.. In your food In your house EVEN IN YOU!!!!!

They are everywhere.. In your food In your house EVEN IN YOU!!!!!

They are everywhere.. In your food In your house EVEN IN YOU!!!!!

Presentation transcript:

They are everywhere.. In your food In your house EVEN IN YOU!!!!!

Acids are substances that produce hydrogen ions (H+) in water. The higher the concentration of hydrogen ions and acid produces the stronger the acid.

Tastes Sour Conduct Electricity Corrosive, which means they break down certain substances. Many acids can corrode fabric, skin,and paper Some acids react strongly with metals Turns blue litmus paper red Picture from BBC Revision Bites ases_1.shtml ases_1.shtml

Acetic Acid = Vinegar Citric Acid = lemons, limes, & oranges. It is in many sour candies such as lemonhead & sour patch. Ascorbic acid = Vitamin C which your body needs to function. Sulfuric acid is used in the production of fertilizers, steel, paints, and plastics. Car batteries

H 2 CO 3 When an acid as this is placed in water, a hydrogen atom separates out as a positive ion Do you think the acid conducts electricity?

Bases are compounds that produce hydroxide ions (OH-) in water. All bases contain an oxygen atom and a hydrogen atom that are bonded together to form a hydroxide ion. The –OH, or hydroxide, group has a negative ionic charge.

Feel Slippery Taste Bitter Corrosive Can conduct electricity. (Think alkaline batteries.) Do not react with metals. Turns red litmus paper blue.

Bases are commonly found in household cleaners. They can dissolve fats and oils. Some feel slippery

Sodium Hydroxide NaOH Ammonium Hydroxide HN 4 OH Potassium Hydroxide KOH What do these all have in common?

Bases give soaps, ammonia, and many other cleaning products some of their useful properties. The OH- ions interact strongly with certain substances, such as dirt and grease. Chalk and oven cleaner are examples of familiar products that contain bases. Your blood is a basic solution.

An indicator can be used to help identify the pH of a substance because it changes color when there is a change in the pH of a solution

pH is a measure of how acidic or basic a solution is. The pH scale ranges from 0 to 14. Acidic solutions have pH values below 7 A solution with a pH of 0 is very acidic. A solution with a pH of 7 is neutral. Pure water has a pH of 7. Basic solutions have pH values above 7.