Trimester 2 Revision

acid tastes ____.

• sweet

• sour

• bitter

• salty

bases taste ____________,

• soapy

• sweet

• sour

• bitter

bases feel _____________.

• rough

• slippery

• sour

• moist

which acid is produced in stomach

• hydrochloric acid

• nitric acid

• Sulfuric acid

• lactic acid

As the pH of a solution increases and becomes more basic, ___________

•   Number of OH^- ions increase

• Number of H+ ions decreases

• aEqual number of OH^- and H⁺ ions

• Number of H+ ions increases

As the pH value of a solution decreases and becomes more acidic,____________.

• Number of OH^- ions increases

• Number of H+ decreases

• Equal number of OH^- and H⁺ ions

• Number of H+ increases

The molecular formula of Hydroxide ion is, __________.

• H+

• OH-

• H3O+

• H2O

The molecular formula of hydronium ion is, ______

• H2O

• H3O

• H3O+

• OH-

When an acid reacts with a base, what compounds are formed?

• salt only

• metal oxide only

• water only

• salt and water

Sugar solution does not change the color of both blue and red litmus paper. Therefore, sugar solution is _______________.             

• acidic

• alkaline

• basic

• neutral