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School Who has not wished that phenomena such as food spoilage, burning candles, crack and rust paintings from the bodywork of cars occur a bit more slowly? And who has not wanted to wound healing, cooking potatoes, hardening of concrete, plant growth and disintegration of plastics and other objects thrown in the trash occurred more rapidly? ACTIVITY Mount the experiment using the materials below: 3 effervescent tablets, a glass of ice water, a glass of room temperature water and a cup with hot water. How do? Place a tablet in cold water, other in room temperature water and one hot water. What makes these phenomena occur quickly or slowly? The human being can interfere in order to delay or accelerate these processes? In situations where the dissolution is faster? Why put the food in the fridge? How can we relate this with what happened in the experiment? Surely you have seen a pressure cooker. How does it work? In the pressure cooker the food is placed with a certain amount of water. The heat from the flame of the stove makes the water boil. As the pan is fully closed (the lid is sealed with the rubber ring), water vapor can not dispersed and thus the internal pressure increases the pot, tor- nando is greater than atmospheric pressure. The increased pressure causes the water to boil at a temperature above 100 ° C, the vapor formed raises the central valve pin in and out of the pan. At this point, the vapor pressure is stabilized and the temperature inside of the pot does not increase further. Then the cooking of food in a pressure cooker is faster than in open pan. We can say that the speed of a chemical phenomenon is proportional to temperature steam water food Biogeochemistry What does this mean? What does the word "proportionate" means? What happens to the materials microscopically? What happens to the atoms that make up the substance? With increasing temperature, the motion of molecules is intensified by increasing the number of shocks (collision) between the particles. Why should we shake coal to increase the coals? What causes the phenomenon to happen soon?
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Škola Tko još nije poželio da su pojave poput hrane kvarenja, zapaljene svijeće, crack i hrđe slikama iz karoserije automobila dogoditi malo sporije? A tko nije htio zacjeljivanje rana, kuhanje krumpira, kaljenje betona, rast biljaka i dezintegracija plastike i drugih objekata bačen u smeće došlo brže? AKTIVNOST Postavite eksperiment koristeći materijale u nastavku: 3 šumeće tablete, čašu ledene vode, staklo od sobne temperature vode i šalicu s vrućom vodom. Kako to učiniti? Stavite tabletu u hladnoj vodi, drugi na sobnoj temperaturi vode i jednu vruću vodu. Ono što čini ove pojave dogoditi brzo ili polako? Ljudsko biće može miješati kako bi se odgoditi ili ubrzati te procese? U situacijama gdje je raspad je brži? Zašto staviti hranu u frižideru? Kako možemo odnositi ovo što se u eksperimentu? Sigurno ste vidjeli ekspres loncu. Kako se to radi? U loncu hrana se nalazi s određenom količinom vode. Topline iz plamena na štednjaku čini vode prokuhati. Kao pan je u potpunosti zatvorena (poklopac je zapečaćena s gumenim prstenom), vodena para ne mogu raspršena i tako unutarnji tlak povećava lonac, Tor- Nando je veći od atmosferskog tlaka. Povećao pritisak uzrokuje vode kuhati na temperaturi iznad 100 ° C, pare formirana podiže središnji ventil pin u i iz tave. U ovom trenutku, tlak pare se stabilizirala, a temperatura unutar lonca ne povećati dalje. Zatim kuhanje hrane u ekspres loncu je brži nego u otvorenoj posudi. Možemo reći da je brzina kemijske fenomen je proporcionalna temperaturi para voda hrana Biogeokemija Što to znači? Što znači riječ "razmjerno" znači? Što se događa s materijalima mikroskopski? Što se događa u atome koji čine suštinu? S porastom temperature, gibanje molekula je pojačano povećanje broja udaraca (sudara) između čestica. Zašto bismo trebali tresti ugljen povećati ugljen? Što uzrokuje fenomen se uskoro dogoditi?