Ban sha'awa Science: yadda za a ciyar da gida kwarewa a cikin sunadarai zuwa goyon yaro?

A makarantar sakandare, fara sunadarai har 8th sa, da wuya a yi wannan kimiyya yara. Amma shirya dalibi ga batun na iya zama quite fun kuma sauki hanya - ta hanyar shirya kwarewa a cikin sunadarai a gida. Wadannan mini-gwajen zai taimaka dubi kimiyya a daya hannun, wani show na "Chemical dabaru" a yara jam'iyyar da yawa kara mataki na fun.

fireproof doka

Don gudanar da wani wuce yarda da m, amma mai sauki zamba, za ka bukatar:

• doka.
• mai ruwa-ruwa-giya bayani tare da barasa abun ciki na game da 50%.
• gishiri.
• forceps ko hanzaki.

A tsunkule na gishiri ya kamata a kara da bayani. Next a cikin bayani amfani hanzaki sanya doka. Waɗanda suke, a karon farko riko da irin wannan kwarewa a cikin sunadarai, shi ne mafi alhẽri dauki wani karami doka girma!

Da zarar kudi ne mai kyau vymoknut, ya kamata su sake karba hanzaki kuma a hankali girgiza kashe haddi ruwa tare da takarda. Yanzu shi ne mai yiwuwa a kafa wuta! Wuta zai faru a ko'ina cikin doka ba, amma babu daya gefen ko da browns. Wannan shi ne saboda kona barasa dauke a cikin bayani. Bi da bi, da ruwa da sharkaf da takarda ba shi da lokaci zuwa ƙafe.

crystal bukukuwa

Crystal girma - daya daga cikin rare ayukan hutu, wanda yayi nishadi sunadarai. Gwaje-gwajen da crystallization yawanci ciyar a kan sugar, amma sugar lu'ulu'u ne kome sabon. Mun bayar da sabon da kuma sabon abu gani - da lu'ulu'u girma a kan qwai!

Crystal bukukuwa za a iya samu ta hanyar:

• alum (sayar a Pharmacy).
• PVA manne.
• dyes.

A lu'ulu'u a kan qwai girma sosai da sauri, a kawai a rana. Wajibi ne a pre-wanke da bawo sosai da kuma bushe shi. Bayan da qwai smeared da manne da kuma yayyafa alum. Yanzu da suke bukatar su kwanta for 'yan sa'o'i don fitar da bushe sake.

Bugu da ari, fenti da ya kamata a narkar da a biyu kofuna na zallan ruwa. The adadin da fenti za a iya zaba da kansa, a wannan yanayin, kawai tsanani da launi dogara lu'ulu'u daga gare ta. A qwai aka sanya a cikin fenti ga rana ko dare. A daina kwai ta'allaka a cikin wani bayani, da lu'ulu'u girma ya fi girma. Get a shirye crystal qwai ya kamata a hankali - su ne quite m.

Balan-balan a kan kwalban

Kamar yadda za a iya inflated balan-balan ba tare da helium ba tare da yin jiki kokarin? Don yin wannan, za ka iya amfani da wani talakawa yin burodi soda da vinegar, wanda tsaya a wani kabad a kitchen kowane inna. Domin gudanar da wannan gwaji a cikin sunadarai, zai bukata:

• balan-balan.
• kwalban.
• 3-4 teaspoons da soda.
• vinegar.

Soda zuba kai tsaye a cikin wani ball da taimakon mazurari ko wani cokali. Bayan da aka sa a kan kwalban da kananan adadin vinegar. Da zarar da soda da ball fara tashi a cikin kwalba, shi zai fara zuwa kumbura, kamar yadda idan ta helium. Wannan shi ne saboda cewa da vinegar da aka mayar da martani tare da soda, sakewa da carbon dioxide. The ball ne inflated saboda gas cikin yan dakikoki kadan ne kawai da kuma kama!

Multi-kala yadudduka a cikin kwalban

A gaba gwaji a cikin sunadarai yaro zai bayyana a fili manufar yawa daga cikin ruwa. Domin wannan bukatar:

• kwata kofin sunflower man.
• kwata kofin ruwa, tinted a wani haske launi;
• kwata kofin sugar syrup (ga tasiri mayar da hankali, shi ne kuma dole don ƙara fenti).

The yaro iya zaton a gaba abin da zai faru a lokacin da hadawa da duk wadannan taya. Ya kamar sakamakon - syrup settles saukar a matsayin mafi m, da ruwa ne a tsakiyar, da kuma man zai zauna a kan saman. Za ka iya gwaji tare da launuka da ruwaye, yin baba misali abun da ke ciki. Alal misali, ta ƙara daban-daban yawa na sukari a cikin syrup, za a iya samun wasu taya na daban-daban yawa.

Laboratory gwaje-gwajen a cikin sunadarai na iya zama quite da ba m. Wadannan m kuma duk da haka sauki dabaru don taimaka yaudari yaro wajen nazarin kimiyya da kuma kawai za a Miscellaneous a kan wani ruwa rana.