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Welcome to PAEKUPU, words related to Te Marautanga o Aotearoa. Curriculum areas presently available on PAEKUPU: Toi Ataata, Te Reo Matatini, Puoro, Te Reo Pāngarau, Te Reo Pūtaiao, Ngā Mahi a te Rēhia
 
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Te Reo Pūtaiao

waikawa

acid

tūingoa

WHAKAMĀRAMA

He rōpū pūhui matū ka tuku i te katote hauwai (H+) mēnā ka memeha ki rō wai (H2O). He kaha ngā waikawa kohuke, pērā i te waikawa pūhaumāota (HCl). Mā ēnei waikawa e pūnguru ai te konganuku. Kāore i te pērā rawa te kaha o ngā waikawa whaiwaro, pērā i te waikawa rēmana (C6H8O7). Ko te kukūtanga o te katote hauwai (H+) e tohu ana i te kaha o te mehanga waikawa.

A class of chemical compounds which release hydrogen ions (H+) when dissolved in water (H2O). Mineral acids, such as hydrochloric acid (HCl), are very strong and will corrode metals. Organic acids, such as citric acid (C6H8O7), are weaker. The strength of an acid depends on its concentration of hydrogen ions (H+).

Tauira KŌrero

Pēhea nei te kaha o te waikawa pungatara (H2SO4)?

Ringia atu he waikawa pūhaumāota (HCl) ki te konutea, ka āta tirotiro ai i tana mahi.

Whakamahia ai ētahi waikawa i roto i te mahi tunu kai, pērā i te waikawa winika (CH3COOH).

WhakamĀrama Āpitihanga

Ka inea te kaha o tētahi waikawa i runga i te āwhata pH. Kei raro iho i te 7 ngā waikawa katoa, ko te 0 hei tohu i tētahi waikawa tino kaha, he ngū te pH7, ko te wai tērā. Ko tā te waikawa, he huri i te tohu waikawa kahurangi kia whero.

Koia nei ngā tae o te Ranunga Taetohu hei tohu i te pH o tētahi waikawa:

 

Koia nei ētahi waikawa e mōhio whānuitia ana:

WaikawaTōna tohuTōna kahaHei tauira
waikawa pūhaumāotaHCL he tino kahate wai kūnatu o te puku 
waikawa pungataraH2SO4 he tino kahangā pūhiko motukā
waikawa hauotaHNO3 he tino kahangā tukanga ahumahi
waikawa winikaCH3COOH he āhua ngoikorete winika hei rokiroki kai
waikawa rēmanaC6H8O7 he āhua ngoikorete rēmana me te ārani
waikawa mewaroHCOOH he ngoikorekei roto i te tinana o te pōpokorua

Takenga Mai

wai - water, liquid

kawa - bitter, sour, unpleasant taste

Tauira KŌrero

Pēhea nei te kaha o te waikawa pungatara (H2SO4)?

Ringia atu he waikawa pūhaumāota (HCl) ki te konutea, ka āta tirotiro ai i tana mahi.

Whakamahia ai ētahi waikawa i roto i te mahi tunu kai, pērā i te waikawa winika (CH3COOH).

WhakamĀrama Āpitihanga