Chemistry
You would expect an element's symbol to match its name, yet sodium is written Na and gold is Au. These chemistry quizzes clear up puzzles like that while drilling the building blocks every science class leans on.
The Chemistry Behind Everyday Stuff
Several sets stay close to things you can picture. You will see how trees take in CO₂, how plants release oxygen, and why burning hydrogen produces plain water, H₂O. You will also look at why too much carbon dioxide can be a problem and why oxygen bonds so readily with other elements. Solid carbon dioxide gets its moment too: better known as dry ice, it never melts into a puddle but turns straight from solid to gas, a change called sublimation.
Other sets cover the metals you handle daily, comparing copper, gold, and silver and the alloys they form, with symbols like Cu, Au, and Ag. You will find out how carats measure gold's purity and what white gold really is, alongside a quiz on element symbols and another matching lab tools to their jobs.
Element Families on the Periodic Table
Whole columns of the periodic table behave alike, and one group of quizzes leans into that pattern. You will study the alkali metals that react violently with water, the alkaline earth metals beside them, the eager halogens, and the calm noble gases that mostly keep to themselves.
Those odd symbols start to make sense here too. Sodium is Na from the Latin natrium (sodium) and iron is Fe from ferrum (iron), which is why a few symbols look nothing like their English names. Learning the elements by family makes their behavior far easier to predict than memorizing them one by one.
See how many symbols and reactions you can pin down before they start to blur together. Open the free interactive chemistry quizzes and take on whichever group you find trickiest.
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