Acids, Bases and Salts

Which of these turn red litmus paper blue?

• acids

• bases

• salts

Which type of ions are produced by bases when they are in a water solution?

• OH^-

• H⁺

• H₂O

• HCl

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Chemicals formed when an acid and a base combine.

• salts

• noble gases

• metalloids

• hydroxides

Tags

NGSS.MS-PS1-2

Indicators change color in the presence of a(n) _______________.

• acid or base

• buffer

• water molecule

• ester

What is the pH range of a base?

• 0-14

• less than 7

• exactly 7

• greater than 7

Incorrect statement about acids is/are

• they have bitter taste

• they changes the colour or red litmus to blue

• they changes the colour or blue litmus to red

• all above

If the soil is acidic what we should do to make it neutral

• Add salt

• Add acid

• Add base

• Add sugar

Chemical formula of baking soda is-

• NaHCO₃

• NaCO₃

• MgSO₄

• MgCO₃

Tags

NGSS.MS-PS1-1

Substances like dark chocolate that have a bitter taste, usually indicates that it would be classified as a

• Acids

• Bases

• Salts

• All

Which of the following is an acid?

• shampoo

• baking soda

• orange juice

• water