Easy
Chemistry
Reactions & Everyday Chemistry
What happens when substances meet, and why.
Sample question
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What is the chemical formula for water?
Chemistry
Elements, reactions and what everything is made of.
Chemistry is the science of what things are made of and what happens when you put them together, which covers a remarkable amount of daily life. This category works through the periodic table and why it is arranged the way it is, the common compounds hiding behind ordinary names, and the reactions that turn one substance into another. It stays at the level of understanding rather than calculation. The explanations connect a symbol or a rule back to the structure of the atom, which is where nearly every chemical behaviour ultimately comes from.
Difficulty mix
New to Chemistry? Start here
Reactions & Everyday Chemistry
What happens when substances meet, and why.
2 easy
2 medium
1 hard
6–9 min each
5 quizzes in Chemistry
Medium
Chemistry
The Elements Up Close
Ten elements with a distinguishing feature — a strange symbol, a record melting point, a name borrowed from Greek.
Sample question
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Which element does the symbol K stand for?
Hard
Chemistry
How Atoms Bond and React
Electrons changing hands, molecules changing shape, and the rules that decide how fast any of it happens.
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In an ionic bond, what happens to the electrons involved?
Easy
Chemistry
Everyday Chemistry Explained
Why bread goes stale, why onions sting and why ice floats — ten kitchen-cupboard questions with real answers.
Sample question
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Baking soda makes a cake rise by releasing which gas?
Medium
Chemistry
Discoveries That Made Chemistry
Ten moments that turned alchemy into a science, from the death of phlogiston to the first fully synthetic plastic.
Sample question
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Which chemist named oxygen and showed that the phlogiston theory of burning was wrong?
Questions
About Chemistry quizzes
How many Chemistry quizzes are there?
5 published quizzes in this subject, 50 questions in total. Every one is researched, written and checked by hand.
How hard are they?
The mix here is 2 easy, 2 medium and 1 hard. Difficulty is about how obscure the answers are, not how fast you have to be — there is no timer on any quiz.
How long does one take?
About 7 minutes on average, ranging from 6 to 9. Playing every chemistry quiz would take roughly 1 hour.
Which one should I start with?
"Reactions & Everyday Chemistry" is the gentlest way in — 10 questions, about 6 minutes, rated easy.
Do I need an account?
No. Every quiz is free and playable straight away. An optional free account only saves your scores across devices.
Do you explain the answers?
Yes — every question has a short explanation of why the right answer is right, shown the moment you answer, whether you got it or not.