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Natiijada casharka

I can explain why some changes of state are exothermic and some are endothermic.

Muuji qoraalka

Heating transfers energy into a substance and can cause it to melt, evaporate or boil. Melting, evaporation and boiling are endothermic. As it cools, a substance transfers energy into the surroundings by heating and it may condense or freeze. Condensing and freezing are exothermic.

Warqadda shaqada

weli lama diyaarin

Imtixaannada

1. Waa maxay xaaladda biyuhu ku jiraan heerkulka qolka (qiyaastii 20°C)?
- Adag
- Jawaabta saxda ah:Dareere
- Gaas
2. Mid ka mid ah kuwan soo socda ma aha astaamaha (characteristic) walaxda adag (solid state)?
- Qaab go'an
- Lama cadaadin karo
- Jawaabta saxda ah:Si fudud u qulqusha
- Qaybaha ku yaal meelo go'an
3. Waa maxay xaaladda biyuhu ku uumi baxaan?
- Adag
- Jawaabta saxda ah:Dareere
- Gaas
4. Maxaa ku dhacaya mugga (volume) walaxda markay isu beddesho dhaxan (condenses)?
- Wuu kordhaa
- Jawaabta saxda ah:Wuu yaraadaa
- Wuu isku sii ahaanayaa
- Wuxuu noqonayaa eber
5. Sidee awoodda (energy) ee walxaha (particles) isu egtahay marka la barbardhigo baraf (ice) ah -10°C iyo koob biyo ah (glass of water) 20°C?
- Jawaabta saxda ah:Waxay ka sareeysaa koobka biyaha
- Waxay ka sareeysaa barafka
- Waxay isku mid tahay labadaba
- Ma suurtowdo in la ogaado

1. Boilinku waa nooc ka mid ah habka (process) ee noocee?
- Jawaabta saxda ah:Endothermic (kulayl qaata)
- Exothermic (kulayl sii daaya)
- Labadaba
- Midna
2. Kee buugga heerkulbeegga (thermometer) ka tusaya heerkulka ay biyuhu ku jiraan xaaladda dareeraha (liquid state)?
- a
- b
- Jawaabta saxda ah:c
3. Uumitaanku waa hab kulanka nuuga (endothermic) sababtoo ah tamarta waxaa laga wareejiyaa agagaarka loo gudbiyaa walaxda.
- Jawaabta saxda ah:run
- been

Waxa ardaydu arkaan

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HordhacDiyaargarow · Ma diyaarsana
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