Chemistry Acids and Bases

What is the meaning of 'pH'?

• Positive ion of Hydrogen
• Potential of Hydrogen
• Product of Hydroxide
• None of the above

What is the pH of an acid and a base respectively?

• pH 3 & 7
• pH 9 & 11
• pH 5 & 8
• pH 2.35 & 5.98

Select the true answer.

• Acids are red and bases are blue respectively because of the ionic and covalent bonds between them
• Alkalis are red and acids are blue
• Acids and alkalis are both colorless and odorless because they are covalent compounds
• Acid and alkali solutions turn red and blue respectively when the universal indicator is added

Tags

NGSS.MS-PS1-2

Which statement about bases and alkalis is true?

• All bases are alkalis and all alkalis are bases
• All bases are not alkalis but all alkalis are bases
• All bases are acids and all acids are bases
• None of the above

Which acid is the strongest?

• Hydrochloric Acid
• Ethanoic acid

Tags

NGSS.HS-PS1-1

Which ion determines a base?

• H⁺
• OH^-
• OH⁺
• CO_3^2-

What is the pH of an extremely strong acid?

• pH 0
• pH 7
• pH 13
• pH 2

What is the meaning of ionisation in acids and alkalis?

• The splitting of acidic atoms
• The gain or loss of electrons
• The gain or loss of atoms
• The breakage of covalent bonds

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

Which statements are properties of an acid?
1. Reacts with ammonium sulfate to form ammonia
2. Turns red litmus blue

• 1 & 2
• 1 only
• 2 only
• Both of them are wrong

Tags

NGSS.HS-PS1-2

An easy one:
What happens when the universal indicator is added to Hydrochloric acid?

• The solution turns red
• Nothing happens

Tags

NGSS.HS-PS1-2