chemistry experiments for children

HOWYOUCANOBSERVECOAGULATION Gather these materials: Powdered potassiumaluminumsulfate(AI2(S04)a. K2S04);a smallamountof clay; so ...

Allow most of the liquid to boil away.Notethe colorofthe liquid collected in thejar. Results: As the liquid boiled, the color be ...

Follow this procedure: Makea soap solution bysoakingsome soap in a quartjarfilled with water. Thenpreparea datasheet similar to ...

solution,shake,countthe drops, and record the result. By now you have a great deal ofinformationon yourdatasheet.Compareall your ...

THE CHEMISTRY OF SOLUTIONS, DIFFUSION AND OSMOSIS When salt (NaCt) or sugar (C12H 220 u)dissolves in water, the water remains cl ...

food. But first, the minerals andwaterin the soil, the oxygen webreathein, and the food we eat have to be dissolved. The process ...

Results:Sodiumchloride,sucrose,andcoppersulfatepass easilythroughthe filterpaper.Youcan tellthattheymaketruesolutionsbecausethey ...

thirdquartjar.Again, cover thejarand shake it.Noticeandrecordthe levelof theliquidin thisjaras well as itsappearance. Results:Th ...

When two ormoreliquidsform atruesolution,they take up less space in solutionthanthey wouldseparately.Two pintsequalIquart-butnot ...

cool gradually also. When the second and thirdjarshave both cooled toroom temperature,put I small crystal of sodiumthiosulfatein ...

alcohol (C2H50H);warm water; 8 test tubes; a test tube rack;a test tube holder;a glassrod;an alcoholburner;andpaperand pencil. F ...

the residue.Thenfill in the rest of thecolumnsonyourdatasheet. When you reach the eighth tube, boil until only!ofan inchofliquid ...

dry cell. You now havethisarrangementfrom left to right: 6-inch wire, dry cell, 4-inch wire, dry cell, 6-inch wire. Wrap one of ...

HOW YOU CAN OBSERVE DIFFUSION Gather these materials: Three small glasses filled with water; I crystal of potassiumpermanganate( ...

to combiningchemically, that is, when there is no chemicalchange in the moleculesofthe substances involved). Diffusion also occu ...

thecandleover sothatthe wax falls' on theareayouwantsealed.Nowlet the egg, glass, andtubestandundisturbedovernight.In the mornin ...

stayed the same when you boiled it.Benedict'ssolutionprovides a chemical test for sugar. When you add it to asolutioncontainings ...

THE CHEMISTRY OF CRYSTALS Manysubstances have a crystallineform, especially salts (see page 70). A crystalis a solid piece ofmat ...

ofthe two typesofcrystal. Put a smallquantityofeach intoseparatetest tubes. Heatthem one at a time for several minutes over the ...

Results:The sodiumhydroxidegained weight and thesodiumcarbonatelost weight.Therewas also adistinctchange in theappearanceofbothc ...