Carbon dioxide & other acidic oxides
Some oxides can behave like an acid and neutralise bases. How do you identify them?
What is atomic structure?
The atom is not a featureless ball. It consists subatomic particles arranged in a mind-boggling way.
Type of chemical bond quiz
Are you born to guess the type of bond?
Reactivity guidebook
What exactly does reactivity mean? Muse on it with this curated list of O Level TYS questions.
Ask a chemist: Were dinosaurs warm-blooded?
Isotopes are chemically similar but not identical. Their subtle difference makes them an excellent tool to find out if dinosaurs were warm…
Chemical bonding TYS questions – Combined Chemistry
Bonding with chemical bonding
What are cation and anion?
Have your eye on ion
Iron extraction and steelmaking
Ironing out how we get iron out of haematite
Reactivity series of metals
Memorise the reactivity series of metals without memorising
Metals and alloys: Materials that changed history
Uncover the properties and reactivity of metals that matter to the story of humankind
Speeding up reactions with catalysts and enzymes
Catalyse your revision on catalysts and enzymes
Experiments on speed of reaction: how to interpret graphs
Gain a good grasp of graphs
The chemistry of aroma: Pandan smell in tap water
Not all fragrant chemicals are pleasant
5 ways to increase reaction speed
Speed read the five factors that influence reaction speed
2018 O Level Pure Chemistry Practical Paper
Try out the first ever practical exam in the new syllabus
Green chemistry: NEWSand and NEWOil
The chemistry behind how old things are made new
How to find oxidation state?
Learn how to state the oxidation state
Redox reactions: Oxidation and reduction
Four lenses for a new way to look at chemical reactions
2019 O Level Pure Chemistry Practical Paper
What can be more practical than revising for practical exam with past-year practical papers?
Qualitative analysis TYS questions – Combined Chemistry
Go with the flow and solve flowchart questions that are commonly featured in Combined Science QA