Acids & Bases They are everywhere.. In your food In your house EVEN IN YOU!!!!! Ch. 8.3-8.4.

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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!!!!!
Presentation transcript:

Acids & Bases They are everywhere.. In your food In your house EVEN IN YOU!!!!! Ch

What is an Acid?  An acid is a solution that has an excess of H + ions ( which they donate )  Produces hydronium ions (H 3 O + ) when dissolved in water  The more H + ions, the more acidic the solution

Properties of an Acid  Tastes Sour  Conduct Electricity  Corrosive (break down certain substances)  Some react strongly with metals  Turns blue litmus paper red

Uses of Acids  Acetic Acid = Vinegar  Citric Acid = lemons, limes, oranges, & sour candies  Ascorbic acid = Vitamin C  Sulfuric acid = production of fertilizers, steel, paints, plastics, and car batteries

What is a Base?  A base is a solution that has an excess of OH - ions  Bases are substances that can accept hydrogen ions (H + )

Properties of a Base  Feel Slippery  Taste Bitter  Do not react with metals  Turns red litmus paper blue

Uses of Bases  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  Antacids

Acid – Base Reactions  A reaction between an acid and a base is called neutralization  An acid-base mixture produces a salt and water

pH Scale  pH is a measure of how acidic or basic a solution is  Measures H 3 O + concentration  The pH scale ranges from 0 to 14  Acidic = below 7  Neutral = 7  Basic = above 7