Acids, Bases and Salts

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

The characteristic properties of acids and bases

Subtopic

The characteristic properties of acids and bases under Acids, Bases and Salts for Grade 12 IGCSE.

Preview questions (no answers)

1.
$What is the effect of an acid on a piece of red litmus paper?$
A. $It turns blue$
B. $It stays red$
C. $It turns green$
D. $It turns colorless$
2.
$Which of these oxides will react with both hydrochloric acid and sodium hydroxide?$
A. $MgO$
B. $ZnO$
C. $P_{4}O_{10}$
D. $SiO_{2}$
3.
$Which of the following compounds will react with hydrochloric acid to produce a salt and water only?$
A. $Zinc metal$
B. $Copper(II) oxide$
C. $Calcium carbonate$
D. $Sodium sulfite$

Download the worksheet for Acids, Bases and Salts - The characteristic properties of acids and bases to practice offline. It includes additional chapter-level practice questions.

Types of oxides

Subtopic

Types of oxides under Acids, Bases and Salts for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$Which of the following lists contains only acidic oxides?$
A. $SO_{2}, CO_{2}, P_{4}O_{10}$
B. $ZnO, Al_{2}O_{3}, PbO$
C. $Na_{2}O, CaO, MgO$
D. $CO, NO, H_{2}O$
2.
$Which oxide is most likely to be formed when a Group 17 element reacts with oxygen?$
A. $An acidic oxide$
B. $A basic oxide$
C. $An amphoteric oxide$
D. $A neutral oxide$
3.
$Which oxide is used in the treatment of acidic soil in agriculture?$
A. $CaO$
B. $SO_{2}$
C. $P_{4}O_{10}$
D. $Al_{2}O_{3}$

Download the worksheet for Acids, Bases and Salts - Types of oxides to practice offline. It includes additional chapter-level practice questions.

Preparation of salts

Subtopic

Preparation of salts under Acids, Bases and Salts for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the primary reason for using distilled water rather than tap water when washing salt crystals?$
A. $Distilled water is colder$
B. $Tap water contains dissolved impurities$
C. $Distilled water is more acidic$
D. $Tap water reacts with the crystals$
2.
$NH_4^+$
A. $Nitric acid$
B. $Ammonia solution$
C. $Sodium chloride$
D. $Ammonium nitrate$
3.
$In titration, how do we know the reaction is finished when the acid has neutralized the alkali?$
A. $Gas bubbles stop$
B. $A solid forms$
C. $The indicator changes color$
D. $The solution boils$

Download the worksheet for Acids, Bases and Salts - Preparation of salts to practice offline. It includes additional chapter-level practice questions.

Identification of ions and gases

Subtopic

Identification of ions and gases under Acids, Bases and Salts for Grade 12 IGCSE.

About Topic & Revision

Preview questions (no answers)

1.
$What is the expected observation when chlorine gas is tested with damp blue litmus paper?$
A. $It turns red and stays red$
B. $It turns red and then is bleached white$
C. $It turns blue$
D. $It stays blue$
2.
$Which test can distinguish between zinc ions and aluminum ions?$
A. $Adding excess aqueous sodium hydroxide$
B. $Adding excess aqueous ammonia$
C. $Flame test$
D. $Adding silver nitrate$
3.
$Which ion forms a precipitate that dissolves in excess aqueous ammonia to form a deep blue solution?$
A. $Fe^{2+}$
B. $Cu^{2+}$
C. $Zn^{2+}$
D. $Cr^{3+}$

Download the worksheet for Acids, Bases and Salts - Identification of ions and gases to practice offline. It includes additional chapter-level practice questions.

Acids, Bases and Salts

The characteristic properties of acids and bases

❓Preview questions (no answers)

Types of oxides

❓Preview questions (no answers)

Preparation of salts

❓Preview questions (no answers)

Identification of ions and gases

❓Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)