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IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have an extra electron or two, you have a negative charge

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Page 1: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

IONS

Ions are atoms with extra electrons or missing electrons. 

When you are missing an electron or two, you have a positive charge

When you have an extra electron or two, you have a negative charge

Page 2: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

Drawing Ions

Page 3: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

Acids & BasesThey are everywhere..

In your foodIn your house

EVEN IN YOU!!!!!

Page 4: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

What is an acid? An acid is a solution that has an

excess of H+ ions. It comes from the Latin word acidus that means "sharp" or "sour".

The more H + ions, the more acidic the solution.

Page 5: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

Properties of an 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

Picture from BBC Revision Bites http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/acids_bases_1.shtml

Page 6: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

Uses of Acids

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

Page 7: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

Properties of a Base

Feel Slippery Taste Bitter Corrosive Can conduct electricity.

(Think alkaline batteries.) Do not react with metals. Turns red litmus paper

blue.

Page 8: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

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.

Your blood is a basic solution.

Page 9: IONS Ions are atoms with extra electrons or missing electrons. When you are missing an electron or two, you have a positive charge When you have

pH Scale

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.


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