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Miisaanka pH iyo xal u dhigma (universal indicator)

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Natiijada casharka

Waxaan cabbiri karaa pH-ga aashito ama alkali iyadoo la isticmaalayo miisaanka pH.

Hordhac

Ku soo dhawoow casharka maanta. Casharkani wuxuu ku saabsan yahay miisaanka pH iyo universal indicator solution (milan). Waa qayb ka mid ah cutubka acids iyo bases. Waa inaad hore u taqaanid in acids iyo bases ay yihiin noocyo ka mid ah dareeraha, laakiin haddaad ilaawday, ha welwelin, waanu kula socon doonnaa.

Muuji qoraalka
Most acids and alkalis are colourless solutions, so indicators can be used to identify them. pH stands for ‘potential of hydrogen’ and acids contain hydrogen. The higher the concentration of hydrogen, the lower the pH. The pH scale goes up and down in factors of ten, so an acid of pH 2 is ten times more acidic than pH 3. A low pH means acidic, a high pH means alkaline and solutions with a pH of 7 are neutral.

Warqadda shaqada

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Imtixaannada

  1. 1. Kee ka mid ah weedhahan ku saabsan falcelinta kiimikada (chemical reactions) waa run?

    • Jawaabta saxda ah:Alaabo cusub ayaa la sameeyaa marka falcelin kiimikadu dhacdo.
    • Waxyaalo falcelin cusub ayaa la sameeyaa marka falcelin kiimikadu dhacdo.
    • Culayska guud ee waxyaalaha falceliya wuxuu la mid yahay culayska guud ee alaabta.
    • Waxyaalo cusub lama sameeyo marka falcelin kiimikadu dhacdo.

  2. 2. Maxaa dhacaya haddii warqad litmus buluug ah lagu dhex rido casiir liin? (litmus paper waa warqad lagu tijaabiyo aashito iyo basaas)

    • Waxay ku sii hadhaa buluug.
    • Jawaabta saxda ah:Waxay isu beddeshaa casaan.
    • Waxay isu beddeshaa cagaar.
    • Waxay isu beddeshaa huruud.

  3. 3. Maxaa dhacaya haddii warqad litmus cas lagu daro biyo saabuun leh?

    • Jawaabta saxda ah:Waxay isu beddeshaa buluug.
    • Waxay ku sii hadhsataa cas.
    • Waxay isu beddeshaa cagaar.
    • Waxay isu beddeshaa huruud.

  4. 4. Run ama been? Khalkhal (vinegar) waxaa loo isticmaali karaa in lagu dhex-dhexaadiyo sodium hydroxide (dhuxusha sodium hydroxide)?

    • Jawaabta saxda ah:run
    • been

  5. 5. Waa kee weelasha dareeraha ah ee laga yaabo inay u baahdaan sumadda khatarta wax-dhaliya (corrosive hazard label)?

    • biyo
    • caano
    • Jawaabta saxda ah:sulfuric acid (asiidh)
    • sodium hydroxide (alkali)

  1. 1. Qaniinyada shinnidu waa aashito (acidic). Midabkee ayay muujin doontaa universal indicator-ku?

    • buluug
    • cagaar
    • Jawaabta saxda ah:guduud
    • calaamad

  2. 2. Waa maxay macnaha pH?

    • Jawaabta saxda ah:awoodda hydrogen (potential of hydrogen)
    • awoodda hydroxide (potential of hydroxide)
    • awoodda helium (potential of helium)
    • awoodda waxyeelada (potential of harm)

  3. 3. Dooro weedhaha saxda ah ee ku saabsan xoojinta hydrogen iyo pH.

    • Jawaabta saxda ah:Marka xoojinta hydrogen (hydrogen) ay sareeyso, pH-gu wuu hooseeyaa.
    • Marka xoojinta hydrogen ay sareeyso, pH-gu wuu koreeyaa.
    • Marka xoojinta hydrogen ay hooseyso, pH-gu wuu koreeyaa.
    • Marka xoojinta hydrogen ay hooseyso, pH-gu wuu hooseeyaa.

  4. 4. Xalka A wuxuu leeyahay pH ah 8, xalka B-na wuxuu leeyahay pH ka badan 1000 jeer alkalinity (alkaline). Waa maxay pH-ga xalka B?

    • Jawaabta saxda ah:11
    • 10
    • 9
    • 7

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