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Practise the technique before you do it for real. Nothing here can break or be wasted — restart any experiment as many times as you like. No account needed.

Measure the heat of dissolving a solid

Tare a balance, weigh out ammonium nitrate, stir it into water, and follow the temperature drop to work out how much energy dissolving it absorbed.

Takes about
12 minutes
Difficulty
intro
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Prepare a copper(II) nitrate dilution

Condition a pipette, transfer a measured aliquot, dilute to the mark, and watch the teal fade as the solution reaches known concentration.

Takes about
12 minutes
Difficulty
intermediate
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Precipitate silver chloride

Combine two ionic solutions in a beaker, watch what forms, and work out which ions made it.

Takes about
15 minutes
Difficulty
intermediate
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Acid–Base Titration

Practice burette preparation, endpoint control, volumetric reading, and titration stoichiometry.

Takes about
20 minutes
Difficulty
intermediate
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