pH Scale

pH means the 'Potential of hydrogen' and measures ...

• the concentration of helium ions

• the concentration of hydrogen ions

The pH scale ranges from the values ... 

• 0 to 7

• 7 to 14

• 0 to 14

pH numbers greater than 7 indicate...

• acid

• base (also called alkaline)

• neutral

pH numbers LESS than 7 indicate ...

• Base (also called alkaline)

• Acid

Seven (7) on the pH scale indicates ... 

• acid

• base

• neutral

Milk, lemon juice, apple juice and stomach juices are all ... 

• acids

• bases

• neutral

True or False? Bases taste bitter and feel slippery.

• True

• False

Each number on the pH scale indicates a change that is 

• 10 times greater

• 1 times greater