Acid Base Theories

What do bases do to red litmus paper?

• Turn it Red 

• Turn it Blue

• Turn it Yellow

• Turn it Green

What do bases do to blue litmus paper?

• Turn it Red 

• Turn it Blue

• Turn it Yellow

• Turn it Green

What do acids do to blue litmus paper?

• Turn it Red 

• Turn it Blue

• Turn it Yellow

• Turn it Green

Tags

NGSS.MS-PS1-2

Have a bitter taste

• acid

• base

• neither

• both

Feel slippery

• acid

• base

• neither

• both

Which of the following is a base?

• orange juice

• water

• vinegar

• dishwashing detergent

Which of the following statements is correct?

• Blue litmus paper turns red when placed in a base.

• Red litmus paper turns blue when placed in a base.

• Blue litmus paper stays blue when placed in an acid.

• Red litmus paper stays red when placed in a base.

Which of the following is an acid?

• shampoo

• baking soda

• orange juice

• water

... are used to neutralise acid in the stomach.

• Toothpastes

• Bacterias

• Antacids

• More strong acids

Pure water has a pH of 7. Pure water _______.

• is a base

• is a neutral substance

• could be either an acid or a base

• is an acid