Chemistry Form 4

these substances are slippery:

• Acids

• Bases

• Both of the above

• Neither

________ taste sour

• Acids

• Bases

• Both Of the Above

• Neither

PH of a substance measures:

• Potential water content

• Concentration Of Hydroxide

• Concentration Of Hydrogen

• this question is above my level sir

Answer explanation

"pH" Stands for Potential Hydrogen!!

a solution which has a pH of 11:

• is a more alkaline than a solution with a pH of 9

• is less alkaline than a solution with a pH of 9

• is more acidic than water

• question has insufficient information to provide an answer

Answer explanation

The further away the number is from "7" on the pH scale, the stronger its acidity or alkanlinity!!!

which of the following formulas represents carbonic acid?

• HCl

• H₂S0₄

• H₂CO₃

• HNO₃

turns red litmus paper blue

• HCl

• NaOH

• Both of the above

• None of the Above

Neutralization occurs between:

• an acid and a metal

• an acid and a carbonate

• an acid and water

• an acid and a base

Answer explanation

Neutralization occurs when the acidic and basic properties of the reactants are diminished!!!

a salt is formed when the hydrogen ions of an acid are replaced by a:

• metal

• non-metal ion

• Hydroxide ion

• the hydrogen ions are not replaced

Answer explanation

To Form a salt, the Hydrogen ion/s is replaced by a metal or ammonium ion

HCl + K ---------> H₂ + ______

• KCl₂

• KCl

• K₂Cl

• K₂Cl₂

HCl _{+ _________ ------>} MgCl₂ + CO₂ +H₂O

• MgCO₃

• H₂CO₃

• MgOH

• Mg(OH)₂