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Kala soocida adkaha milma ee dareeraha

Cashar 3 / 7

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Faahfaahinta casharka

Natiijada casharka

I can explain how dissolving can be reversed to separate a soluble solid from a liquid.

Muuji qoraalka
Evaporation can remove solvent from a solution, leading to the production of a saturated solution. Crystallisation reforms a solute as crystals from a saturated solution following a change in conditions. Solvents evaporate into the air around you during the process of crystallisation. Larger crystals form when the solvent evaporates more slowly. Heating a solution makes the solvent evaporate more quickly.

Warqadda shaqada

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Imtixaannada

  1. 1. Waa maxay habka dhaca marka adkaha (solid) la arko isagoo 'libdhaya' dareere (liquid) si loo sameeyo xal (solution)?

    • karkarid (boiling)
    • dhagax-ku-ururid (condensing)
    • dhalaalid (melting)
    • Jawaabta saxda ah:milmid (dissolving)
    • uumi-bax (evaporating)

  2. 2. Qiyaas milix ah oo ay ku jirto 0.5 g oo milix ah ayaa lagu shubay weel (beaker) waxaana looga tagay 2 toddobaad daaqad dhexdeeda, ka dib waxaa hadhay oo keliya crystals milix ah. Immisa milix ayaa jiri doonta?

    • 0.0 g
    • 0.25 g
    • 0.4 g
    • Jawaabta saxda ah:0.5 g

  3. 3. Sonkor ayaa lagu daray biyo heerkul ah 60℃ ilaa uu sonkorku sii milmi karin. Xalka ayaa loo daayay inuu qaboojiyo. Maxaad filanaysaa inaad aragto iyo sababta?

    • Wax isbeddel ah ma jiraan maadaama sonkorku wali ku milmi doono.
    • Wax isbeddel ah ma jiraan maadaama heerkulku saameyn kuma laha milanka sonkorka.
    • Sonkor adag ayaa bilaabi doona inuu sameeyo maadaama biyuhu uumi doonaan.
    • Jawaabta saxda ah:Sonkor adag ayaa bilaabi doona inuu sameeyo maadaama uu yar yahay milankiisa heerkul hoose.

  1. 1. Waa maxay solute (walaxda milanta)?

    • Jawaabta saxda ah:Waa walax ku milantay dareeraha (solvent).
    • Waa dareere uu solute ku milmo.
    • Waa adke ah oo qaybihiisu ku habaysan yihiin qaab aan joogto ahayn.
    • Waa walax marqaati ku dhaca (evaporation).

  2. 2. Qeexitaan kee baa si fiican u sharxaya uumitaanka (evaporation)?

    • Waxay ka samaysaa kiristaalo adag oo ka yimaada xal buuxa (saturated solution).
    • Isbeddel ka yimaada xaaladda dareeraha una gudbaya xaaladda gaaska, isagoo ku dhacaya heerkulka karkarinta (boiling point).
    • Jawaabta saxda ah:Isbeddel ka yimaada xaaladda dareeraha una gudbaya xaaladda gaaska, isagoo ku dhacaya heerkulka ka hooseeya heerkulka karkarinta.
    • Waxay ka samaysaa kiristaalo adag oo ka yimaada xal khafiif ah (dilute solution).

  3. 3. Maxaa dhacaya cabbirka crystals-ka (crystals) ee la sameeyo inta lagu jiro crystallisation haddii dareeraha (solvent) uu si tartiib ah u uumi baxo?

    • Crystals-ku way ka yar yihiin.
    • Crystals-ku waxay ahaanayaan cabbir isku mid ah.
    • Jawaabta saxda ah:Crystals-ku way ka weyn yihiin.
    • Crystals-ku way baaba'aan.

  4. 4. Waxyaabaha milma (solvents) waxay uumi baxaan hawada inta lagu jiro crystallisation-ka. Sida ay kuleylku u saameeyo habkani?

    • Kuma laha wax saameyn ah.
    • Wuxuu hoos u dhigaa habka.
    • Jawaabta saxda ah:Wuxuu dedejiyaa habka.

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