Keemia kontrolltöö
Authored by Maret Evisalu
Social Studies
8th Grade
Used 1+ times
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19 questions
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1.
OPEN ENDED QUESTION
3 mins • 1 pt
Kõigi hapete koostisse kuulub …………………………….. .
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2.
OPEN ENDED QUESTION
5 mins • 2 pts
Vesilahustes eralduvad hapete molekulidest positiivsed ………………………………… - ioonid ning happeaniooni negatiivne laeng on võrdne ………………………………………………………………………………….. .
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3.
OPEN ENDED QUESTION
10 mins • 3 pts
Hapete ühised omadused on …………………………………………….. , ………………………………………… ja …………………………………………………………… .
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4.
OPEN ENDED QUESTION
3 mins • 2 pts
Kirjuta välja ainult hapete valemid
NaOH H₂SO₃ Fe(OH)₂ Cl₂O₅ H₂CO₃ H₂O
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5.
OPEN ENDED QUESTION
3 mins • 2 pts
Kirjuta välja ainult aluste valemid
NaOH H₂SO₃ Fe(OH)₂ Cl₂O₅ H₂CO₃ H₂O
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6.
OPEN ENDED QUESTION
15 mins • 6 pts
NaOH ……………………………………
Fe(OH)₂ …………………………………
KOH …………………………………….
Cr(OH)₃ …………………………………
Hg(OH)₂ ………………………………….
Al(OH)₃ ……………………………………
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7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
tsink(II)hüdroksiidi valem on
Zn2OH
Zn(OH)2
ZnOH
ZnO2
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