pH Scale and Indicators

What colour is Universal indicator when the solution is neutral?

• Red

• Green

• Blue

• Purple

ph range of acids are .....

• 0-6

• 7

• 8-14

• 4-10

ph range of alkalis are .....

• 0-6

• 7

• 8-14

• 4-10

An acidic substance will have a pH of

• less than 7

• greater than 7

• equal to 7

A neutral substance will have a pH of

• less than 7

• greater than 7

• equal to 7

An alkaline material will have a pH of

• less than 7

• greater than 7

• equal to 7

Here is the results of a pH test of vinegar.

Is this substance acidic, alkaline, or neutral?

• Acidic

• Alkaline

• Neutral

Here are the pH results of hand soap.

Is this substance acidic, alkaline or neutral?

• Acidic

• Alkaline

• Neutral

What is used to tell if a substance is acid, alkaline or neutral?

• a thermometer

• a balance

• an indicator

• paper

What colour is universal indicator in an alkaline solution?

• Green
• Orange
• Purple
• Red