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Chemistry treasure hunt

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Subjects within Chemistry

Periodic Table 1.820 questions Atoms & Molecules 1.709 questions Chemical Reactions 2.158 questions Water & Hydrogen 1.679 questions Acids & Bases 2.925 questions States of Matter 2.137 questions Mixtures & Solutions 2.023 questions Crystals 2.353 questions Food Chemistry 1.822 questions Fireworks & Pyrotechnics 2.085 questions Metals 2.552 questions Gases 2.548 questions Fuels & Energy 2.213 questions Colour & Pigments 1.984 questions Alchemy & History 2.166 questions Organic Chemistry 1.703 questions Polymers & Plastics 1.831 questions Oxidation & Reduction 2.297 questions Laboratory Techniques 1.725 questions Electrolysis 1.508 questions

Featured this week: example questions for Chemistry

New example questions from the library every Monday. Updated on 5 October 2026.

Why do fish have gills?
For swimming To get oxygen To eat To play
Which animal uses a lot of energy to run?
A horse A snail A stone A table
What colour is fire usually?
Orange and red Green and purple Blue and pink Black and white
What do we eat to get energy?
Food Stone Sand Paper
What happens when a car runs out of petrol?
He stops He will fly He turns red He gets bigger
What happens when you put water in the freezer?
It will be ice cream Getting hot It turns yellow It disappears
What shape does an ice cube often have?
Square Round Triangle Heart
What do bees do to make honey?
They mix nectar in their bellies They boil water They eat sand They sing songs
Create a chemistry treasure hunt for Ages 3-4
What metal is in a bicycle?
Steel Soap Toothpaste Shampoo
Which vehicle does not use fuel?
A bicycle A car A plane A boat
What comes out of the chimney when wood is fired?
Smoke Balloons Birds Confetti
What do you see when you put chalk in water?
The water turns a little white Chalk gets bigger The water disappears Everything turns red
How does a wet towel feel?
Moist and heavy Dry and light Hard as stone As air
What happens to iron when it gets wet?
It may rust Turning green It gets softer It is going to grow
What did alchemists write in their books?
Secret signs Plain letters Beautiful pictures Funny stories
What energy does a mixer use?
Electricity Wind Sun Water
Create a chemistry treasure hunt for Ages 5-6
What substance are all hormones made of?
Substances with carbon Water only Air only Sand only
What is the name of the glass cup with lines for measuring liquids?
A measuring cup A coffee mug A vase A glass jar
What do you use to weigh powder?
A scale A ruler A thermometer A clock
What happens when you put baking soda (bicarbonate of soda) in vinegar?
It will foam and bubble It gets very hot It gets very cold Nothing happens
Why are polar bears white?
That has nothing to do with ice cream They eat a lot of ice cream They are made of ice They sleep on ice
Which garment could be made of plastic?
A mackintosh A wool jumper A cotton shirt A leather shoe
What does acid do to lime?
It solves It makes it harder It makes it bigger It makes it blue
How long should you wait after lighting fireworks?
Running far away Stay close to it Sit on it Grab it
Create a chemistry treasure hunt for Ages 7-8
Which substance accounts for the yellow colour of bananas?
Carotene Chlorophyll Vitamin C Sugar
Which element is used to make aircraft lighter?
Aluminium Iron Copper Lead
Which substance causes the brown colour of cola?
Caramel dye Chocolate Coffee Iron
What has been called the natural cycle of water?
The water cycle The air cycle The soil cycle The salt cycle
Which symbol is used for the element hydrogen?
H W Wa V
What element is used in toothpaste to prevent cavities?
Fluor Chlorine Bromine Iodine
Which element has the symbol N?
Nitrogen Neon Sodium Nickel
What is the difference between a cloudy and a clear solution?
Through a clear solution you can see well, through a cloudy one you cannot A clear solution is always cold A turbid solution contains no water There is no difference
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Where are the electrons in an atom?
In peels around the core At its core Outside the atom Between protons
What organic substance is used as flavouring in liquorice?
Aniseed oil (organic compound) Citric acid Acetic acid Lactic acid
What organic substance is contained in petroleum jelly (petroleum jelly)?
Paraffin Ethanol Glycerine Acetone
What is created when wood burns?
Carbon dioxide and water Oxygen only Water only Nitrogen and helium
Which three main components does an atom consist of?
Protons, neutrons and electrons Core, shell and jacket Protons, isotopes and ions Electrons, photons and neutrons
What kind of mixture is fog?
Water droplets in air Air in water Sand in water A pure substance
Which element is used in fireworks for a red colour?
Lithium Sodium Potassium Magnesium
What invention made fireworks possible?
Gunpowder Lucifer Dynamite Oil
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What property do polymers have?
They consist of repeating units (monomers) They are always biodegradable They always contain oxygen They are always soluble in water
What is the approximate pH of coffee?
5 7 9 2
What is the difference between electrolysis and electroplating?
Electroplating is a specific application of electrolysis Electrolysis is a specific application of electroplating They are the same process They have nothing to do with each other
What is the pH of a 0.01 M HCl solution?
2 12 0,01 -2
What happens if you reverse polarity during electrolysis?
Reactions at the electrodes are reversed Nothing happens Electrolysis stops Melting the electrodes
Why are metals used as electrical conductors?
They have free electrons that can move They have a low density They are magnetic They can be easily formed
What is the hardest naturally occurring alloy?
Meteorite steel Bronze Brass Plain steel
Which quantity is used to measure the amount of electricity in electrolysis?
Coulomb Amp Volt Watt
Create a chemistry treasure hunt for Ages 13-14
What is the electron configuration of a copper atom deposited during electrolysis?
[Ar] 3d¹⁰ 4s¹ [Ar] 3d⁹ [Ar] 3d¹⁰ 4s² [Ar] 3d⁸ 4s²
What is the density of carbon dioxide compared to air?
About 1.5 times heavier About 2 times lighter About the same About 3 times heavier
Which reagent is used for the oxidation of alkenes to diols?
Osmium tetroxide (OsO4) Potassium permanganate in acid solution Chromium trioxide Hydrogen peroxide
What is the solubility of a substance?
The maximum amount of substance that can dissolve in a given amount of solvent The rate at which a substance dissolves The temperature at which a substance begins to dissolve The colour given to a solution
What type of crystal defect occurs when atoms are not in the right places in the lattice?
Interstitial fault Screw defect Border defect Stacking error
What gas is used in balloons to make them float and is the second lightest element?
Helium Hydrogen Neon Argon
Which property increases from gas to liquid to solid?
Arrangement of molecules Velocity of movement of molecules Volume per molecule Number of molecules
Which alchemical practice led to the discovery of porcelain?
Chinese alchemists who made immortality pills Arab goldsmiths European drugmakers Byzantine gem makers
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How many non-binding electron pairs does ammonia (NH₃) have?
1 2 3
What technique is used to grow artificial crystals from the vapour phase?
Chemical vapour transport (CVT) Zone-refinement Bridgman method Flux growth
Which element forms the basis for organic chemistry?
Carbon (C) Silicon (Si) Hydrogen (H) Oxygen (O)
What substance gives green tea its antioxidant properties?
EGCG (Epigallocatechin gallate) Caffeine Theophylline L-theanine
Which technique is most commonly used for the determination of crystal structures?
X-ray diffraction Electron microscopy Infrared spectroscopy Mass spectrometry
What is the effect of dilution on the pH of a strong acid solution?
pH rises pH drops The pH remains the same The pH becomes negative
Which connection has the highest mass?
Octane Pentane Hexane Heptane
According to VSEPR theory, what molecular geometry does SF₄ have?
Rocker (seesaw) Tetrahedral Square planar Trigonal bipyramidal
Create a chemistry treasure hunt for Ages 17-18
What process is used to produce high-purity aluminium from alumina?
Hall-Héroult process Bessemer process Frasch process Haber-Bosch process
What is the oxidation state of chromium in chromium oxide (Cr₂O₃)?
+3 +6 +2 +4
Which intermediate is formed in the SN1 reaction?
Carbokation Carbanion Free radical Carbeen
What gas is used as a propellant in medical inhalers?
Hydrofluoroalkane (HFA) Carbon dioxide Nitric oxide Propane
What is the name for the transition from liquid to gas below the boiling point?
Evaporation Cooking Sublimation Condensation
What is the systematic name for ammonia (NH₃)?
Nitrogen trihydride Nitrogen hydride Ammonium hydride Nitrogen water
What causes the yellow colour of urine?
Urobiline Bilirubin Creatinine Urea
What causes the colour change of alexandrite?
Change in light source spectrum Temperature fluctuations Mechanical stress Electrical charge
Create a chemistry treasure hunt for Ages 18+

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A Chemistry scavenger hunt is a GPS walk where you answer questions on the topic of Chemistry. Walk from location to location and learn while you are outside.

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