placeholder image to represent content

Half equations: electrolysis

Quiz by Oak National Academy: GCSE Chemistry Edexcel Higher

Feel free to use or edit a copy

includes Teacher and Student dashboards

Measure skills
from any curriculum

Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.

With a free account, teachers can

edit the questions
save a copy for later
start a class game
automatically assign follow-up activities based on students’ scores
assign as homework
share a link with colleagues
print as a bubble sheet

Q 1/6
Score 0
What does a half-equation describe?
29
What happens to one reactant in a reaction.
What happens to the products in a reaction.
What happens to all reactants in a reaction.

Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

New Quizalize solo game modes

6 questions

Show answers

Q1
What does a half-equation describe?
What happens to one reactant in a reaction.
What happens to the products in a reaction.
What happens to all reactants in a reaction.
30s
Q2
What do half-equations show?
Only the atoms
Only the charges
Balanced charges and balanced atoms
30s
Q3
When an atom gains electrons we say it has been ...
oxidised.
reduced.
thermally decomposed.
30s
Q4
In an electrolysis cell, where does oxidation occur? why?
At the cathode, because positive ions gain electrons.
At the cathode, because negative ions lose electrons.
At the anode, because positive ions gain electrons.
At the anode, because negative ions lose electrons.
30s
Q5
What are spectator ions?
Ions that react during the reaction.
Ions that do not take part in the reaction.
Ions that are formed as a result of the reaction.
30s
Q6
In the electrolysis of molten zinc chloride, the ionic equation is Zn²⁺(l) + 2Cl⁻(l) → Zn(s) + Cl₂(g). Which of the following is correct?
There are no spectator ions.
H⁺ and OH⁻ are spectator ions.
Zn²⁺ is a spectator ion.
30s

Teachers give this quiz to your class