Qaaciidooyinka kiimikada

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Waxaan isticmaali karaa astaamaha kiimikada si aan u qoro qaaciidooyinka kiimikada ee curiyeyaasha iyo isku-dhisyada.

Hordhac

Casharkan wuxuu ku saabsan yahay qaacidada kiimikada (chemical formula), oo qayb ka ah cutubka 'Atoms, elements and compounds'. Waa inaad hore u taqaanid in curiyeyaasha (elements) iyo isku-dhisyada (compounds) ay ka kooban yihiin atamyo, iyo sida calaamadaha kiimikada (chemical symbols) loo isticmaalo.

Muuji qoraalka

The symbols for each element (each type of atom) a substance contains, appear in its chemical formula. Numbers (subscripts) next to chemical symbols in a formula show the numbers of each type of atom in a compound. Each compound contains a different combination of elements. Some compounds contain the same elements as other compounds, but in a different ratio.

Warqadda shaqada

weli lama diyaarin

Imtixaannada

1. Mid ka mid ah kuwan soo socda waa molecule (molecule)?
- Na
- Jawaabta saxda ah:H₂O
- Mg
- NH₃

1. Waa maxay macnaha qaacidada kiimikada H₂O?
- Jawaabta saxda ah:Laba atom oo hydrogen ah iyo hal atom oo oxygen ah.
- Hal atom oo hydrogen ah iyo laba atom oo oxygen ah.
- Laba molecule oo hydrogen ah iyo hal molecule oo oxygen ah.
- Laba atom oo oxygen ah iyo hal atom oo hydrogen ah.
2. Qaacidada CO₂, tiro-hoosaadka '2' wuxuu muujinayaa maxay?
- Waxaa jira laba atom oo kaarboon ah.
- Jawaabta saxda ah:Waxaa jira laba atom oo oksijiin ah.
- Isku-darku waa laba jeer ka culus oksijiinka.
- Isku-darku waa laba jeer ka falgalka badan.
3. Waa maxay farqiga u dhexeeya H₂O iyo H₂O₂?
- H₂O₂ waxay leedahay atamyo hydrogen badan.
- H₂O waxay leedahay atamyo oxygen badan.
- Jawaabta saxda ah:H₂O₂ waxay leedahay atamyo oxygen badan.
- H₂O waxay leedahay atamyo hydrogen badan.
- Ma jiro farqi. Waxay leeyihiin tiro isku mid ah oo atamyo oxygen iyo hydrogen ah.
4. Hadii aad rabto inaad si fiican u qeexdo qaacidada kiimikada (chemical formula), kee baa ugu habboon?
- Sharaxaad ku saabsan falcelinta kiimikada.
- Sawir muuqaal ah oo muujinaya molecule-ka.
- Jawaabta saxda ah:Hab astaan ah oo lagu muujiyo curiyeyaasha (elements) ku jira walaxda kiimikada.
- Hab lagu ogaado pH-ga walaxda.

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