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Dhalaalid: heerkulka dhalaalidda iyo heerkulka qaboobidda

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Waxaan awoodi karaa inaan cabbiro heerkulka dhalaalidda iyo heerkulka qaboobidda walax.

Hordhac

Darsigani wuxuu kaa caawinayaa inaad barato sida loo qiyaaso heerkulka dhalaalida (melting point) iyo heerkulka qaboobida (freezing point) ee walax. Waa inaad hore u taqaan xaaladaha dareeraha iyo kan adag, iyo sida walaxdu uga beddelanto mid ilaa midka kale.

Muuji qoraalka
When it melts, a substance changes from the solid state to the liquid state. When it freezes, a substance changes from the liquid state to the solid state. At temperatures below its melting point, a substance is in its solid state. At temperatures above its freezing point, a substance is in its liquid state. The melting point and freezing point of a pure substance are the same temperature.

Warqadda shaqada

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Imtixaannada

  1. 1. Waa maxay saddexda xaaladood ee maaddada (matter)?

    • Kulul, Qabow, Diirran
    • Biyo, Baraf, Uumi
    • Jawaabta saxda ah:Adag (solid), Dareere (liquid), Gaas (gas)

  2. 2. Waa keem gobolka maadada (state of matter) ay ku jiraan walxaha (particles) meel go'an oo kaliya ayay gariiri karaan?

    • Gobolka dareeraha (liquid state)
    • Gobolka gaaska (gas state)
    • Jawaabta saxda ah:Gobolka adag (solid state)

  3. 3. Waa keene xaaladda maaddada (state of matter) ee qaadata qaabka weelka ay ku jirto?

    • Xaaladda gaaska (gas state)
    • Xaaladda adag (solid state)
    • Jawaabta saxda ah:Xaaladda dareeraha (liquid state)

  4. 4. Waa maxay sababta ugu weyn ee keentay in walaxda adag aysan u qulqulin sida walaxda dareeraha ah?

    • Qaybaha aad bay u weyn yihiin
    • Qaybaha aad bay u yar yihiin
    • Jawaabta saxda ah:Xoogagga soo jiidashada ee u dhexeeya qaybaha ayaa ka xoog badan

  1. 1. Walaxdu waa goorma ay tahay xaalad adag (solid state)?

    • Ka sareysa heerkulka dhalaalka (melting point)
    • Jawaabta saxda ah:Ka hooseysa heerkulka dhalaalka
    • Ka sareysa heerkulka qaboobida (freezing point)

  2. 2. Haddii walax leedahay heerkulka dhalaalka (melting point) 50°C, heerkul intee le'eg ayay ku qaboobi doontaa?

    • -10°C
    • 0°C
    • 48°C
    • Jawaabta saxda ah:50°C
    • 100°C

  3. 3. Walaxdu waxay leedahay heerkulka dhalaalida/qaboojinta oo ah 25°C. Haddii muunad ka mid ah walaxdan ay ku jirto weel heerkulkiisu yahay 25°C, kee baa ka mid ah hadalladan ugu saxsan?

    • Walaxdu waa inay gabi ahaanba tahay xaalad adag (solid).
    • Walaxdu waa inay gabi ahaanba tahay xaalad dareere (liquid).
    • Jawaabta saxda ah:Walaxdu waxay noqon kartaa mid adag ama dareere, ama labadaba isku mar.

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