Acid Base Indicators

Indicators are used to test if a solution is ________________

• Sweet or Sour

• Acidic or Basic

• Fresh or Bitter

• Sour or Bitter

Acid-Base indicators can tell the difference between an acid or base based on the change in ___________

• Smell

• Colour

• Taste

• Feel

Which of the indicators below can tell how acidic or basic a solution is?

• Phenolphthalein

• Methyl Orange

• Universal Indicator

• Litmus Paper

Litmus paper changes colour to ___________ in an acid.

• Blue

• Green

• Yellow

• Red

A substance that changes color when mixed with an acid or base is a(n) ___.

• indicator

• neutralizer

• corrosive

• electricity

What type of paper is used to test for acids and bases?

• Red paper

• Blue paper

• Lined paper

• Litmus paper

Litmus paper changes colour to ___________ in an alkaline.

• Blue

• Green

• Yellow

• Red

Phenolphthalein changes colour to ___________ in an acid.

• Colourless

• Blue

• Pink

• Yellow

Tags

NGSS.MS-PS1-2

Phenolphthalein changes colour to ___________ in an alkaline.

• Colourless

• Blue

• Pink

• Yellow

Methyl Orange changes colour to ___________ in an acid.

• Green

• Blue

• Red

• Yellow