Falcelinta exothermic iyo endothermic

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I can identify whether a chemical reaction is exothermic or endothermic and explain how I know.

Muuji qoraalka

An exothermic chemical reaction causes an increase in temperature (of the surroundings). An endothermic chemical reaction causes a decrease in temperature (of the surroundings). An exothermic reaction transfers energy from the reactants to the surroundings. An endothermic reaction transfers energy from the surroundings to the products.

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Imtixaannada

1. Run ama been? Isbeddelka xaaladda (state) wuxuu muujinayaa in falgal kiimiko (chemical reaction) uu dhacay.
- run
- Jawaabta saxda ah:been
2. Waa kuwee kuwan soo socda tusaalooyin falgal kiimikaad (chemical reactions) ah?
- Jawaabta saxda ah:oksidation (oxidation)
- burburka kulaylka (thermal decomposition)
- uumaynta (evaporation)
- dhagxanaynta (condensation)
3. Gaaska hydrogen iyo magnesium chloride ayaa la sameeyaa marka magnesium uu la falgalo hydrochloric acid. Kee ka mid ah kuwan soo socda ayaa matalaya isla'egta kiimikada ee falgalka?
- Jawaabta saxda ah:magnesium + hydrochloric acid → magnesium chloride + hydrogen
- magnesium chloride + hydrogen → magnesium + hydrochloric acid
- magnesium chloride + hydrochloric acid → magnesium + hydrogen
- hydrochloric acid + hydrogen → magnesium + magnesium chloride
4. Gubashadu waa tusaale ... Dooro laba jawaab oo sax ah.
- Jawaabta saxda ah:fal-celin gubasho (combustion reaction).
- fal-celin dhexdhexaadin (neutralisation reaction).
- fal-celin burburka kulaylka (thermal decomposition reaction).
- fal-celin oksaydh (oxidation reaction).

1. Falcelinta endothermic waxay keentaa ...
- kororka heerkulka agagaarka.
- Jawaabta saxda ah:hoos u dhaca heerkulka agagaarka.
- heerkulka agagaarka inuu isku mid ahaado.
2. Waa kuwee mid ka mid ah falcelinnada (reactions) inta badan kulayl sii daaya (exothermic)?
- Jawaabta saxda ah:gubasho (combustion)
- burburka kulaylka (thermal decomposition)
- dhexdhexaadin (neutralisation)
- sawirka cuntada ee dhirta (photosynthesis)
3. Arday ayaa ilaaliyay heerkulka fal-celin (reaction). Heerkulka bilowga wuxuu ahaa 20°C, heerkulka dhamaadkuna wuxuu ahaa 15°C. Kee ka mid ah weedhahan ku saabsan fal-celinta ayaa sax ah?
- Fal-celintu waa mid kulayl sii daysa (exothermic).
- Jawaabta saxda ah:Farqiga heerkulka waa –5 °C.
- Tamarta waxaa laga wareejiyaa agagaarka (surroundings) loo wareejiyaa alaabta soo baxda (products).
- Heerkulka agagaarku wuu kordhay.
4. Run ama been? Ka dib falcelin exothermic ah, alaabta falcelintu waxay ka kooban tahay tamar badan marka loo eego walxaha falcelinta.
- run
- Jawaabta saxda ah:been

Waxa ardaydu arkaan

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HordhacDiyaargarow · Ma diyaarsana
Imtixaanka bilowgaXusuusi · 4 su'aalood
Muuqaalka casharkaBaro · Ma diyaarsana
Imtixaanka dhamaadkaHubi · 4 su'aalood

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