Chemical Reactions

Rate of reaction

Subtopic

Rate of reaction under Chemical Reactions for Grade 12 IGCSE.

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1.
$If a reaction is monitored by mass loss, the gas produced must be allowed to:$
A. $Dissolve in the liquid$
B. $Escape from the flask$
C. $React with the catalyst$
D. $Turn back into a solid$
2.
$Which of the following changes will NOT speed up a chemical reaction?$
A. $Increasing the temperature$
B. $Adding a catalyst$
C. $Increasing the particle size of a solid reactant$
D. $Increasing the concentration of a solution$
3.
$What happens to the rate of a reaction as the concentration of the reactants decreases?$
A. $The rate increases$
B. $The rate decreases$
C. $The rate remains constant$
D. $The rate fluctuates$

Download the worksheet for Chemical Reactions - Rate of reaction to practice offline. It includes additional chapter-level practice questions.

Reversible reactions and equilibrium

Subtopic

Reversible reactions and equilibrium under Chemical Reactions for Grade 12 IGCSE.

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Preview questions (no answers)

1.
$N_{2}(g) + 3H_{2}(g) \rightleftharpoons 2NH_{3}(g)$
A. $They increase.$
B. $They decrease.$
C. $They stay the same.$
D. $They both turn into solids.$
2.
$What is the effect of increasing the surface area of a solid reactant in a reversible reaction?$
A. $It shifts the equilibrium to the right.$
B. $It shifts the equilibrium to the left.$
C. $It increases the rate at which equilibrium is reached.$
D. $It decreases the yield of the products.$
3.
$What is the main use of the ammonia produced in the Haber process?$
A. $Fuel for cars$
B. $Making plastics$
C. $Making fertilizers$
D. $Purifying water$

Download the worksheet for Chemical Reactions - Reversible reactions and equilibrium to practice offline. It includes additional chapter-level practice questions.

Redox reactions

Subtopic

Redox reactions under Chemical Reactions for Grade 12 IGCSE.

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Preview questions (no answers)

1.
$2H_{2} + O_{2} ightarrow 2H_{2}O$
A. $0 to -1$
B. $0 to +1$
C. $+1 to 0$
D. $-1 to 0$
2.
$Which of the following elements is considered the strongest oxidizing agent in Group 17?$
A. $Fluorine$
B. $Chlorine$
C. $Bromine$
D. $Iodine$
3.
$NaClO_{3}$
A. $-1$
B. $+1$
C. $+3$
D. $+5$

Download the worksheet for Chemical Reactions - Redox reactions to practice offline. It includes additional chapter-level practice questions.

Rate of reaction

❓Preview questions (no answers)

Reversible reactions and equilibrium

❓Preview questions (no answers)

Redox reactions

❓Preview questions (no answers)

Preview questions (no answers)

Preview questions (no answers)

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