
Rūgštys ir bazės
Authored by Lorenta Juškienė
Chemistry
9th Grade
Used 28+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuri formulė yra sieros rūgšties?
H2CO3
H2SO4
H2SO3
HNO3
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kurio šių junginių vandeninis tirpalas yra bazinis?
kalcio chlorido
natrio chlorido
vandenilio chlorido
magnio hidroksido
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuri formulė yra natrio hidroksido?
Na2CO3
NaOH
Ca(OH)2
NaCl
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuri dalelė lemia tirpalo rūgštines savybes?
OH-
Cl-
H+
Na+
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuriuo ženklu būtų pažymėta rūgštis?
a ir b
e
f
c
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kaip reikia skiesti koncentruotą sieros rūgštį?
Į indą su vandeniu pamažu pilti koncentruotą rūgštį.
Į indą su vandeniu iškart supilti visą koncentruotą rūgštį.
Į koncentruotą rūgštį pilti vandenį.
Nesvarbu, kaip pilti ir maišyti.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Iš pateiktų tirpalo savybių atrinkite tą, kuri būdinga bazėms.
tirpalo pH mažesnis negu 7
lakmusas paraudonuoja
yra rūgštus
tirpina riebalus
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