Na wejściu
Quiz
•
Chemistry
•
1st Grade
•
Practice Problem
•
Hard
Barbara Bandura
Used 25+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Zapis 2 CO2 oznacza
2 atomy tlenku węgla (IV)
2 cząsteczki tlenku węgla (IV)
2 atomy tlenku węgla (II)
2 cząsteczki tlenku węgla (II)
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
3 cząsteczki kwasu siarkowego (IV) H2SO3 zawierają
2 atomy wodoru
3 cząsteczki tlenu
6 atomów wodoru
3 cząsteczki wodoru
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Fe(OH)2 to
tlenek żelaza(III)
wodorotlenek żelaza (III)
wodorotlenek żelaza (II)
tlenek żelaza (II)
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
wzór tlenku sodu to:
NaO
NaO2
KO
Na2O
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
współczynniki stechiometryczne w równaniu K + H2O --->KOH + H2 współczynnikami stechiometrycznymi są liczby:
2,2,2,1
1,1,1,1
1,2,1,2
2,1,2,1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Masa cząsteczkowa CaCO3 wynosi:
50g
50u
100g
100u
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jeżeli w 200 g roztworu znajduje się 30 g substancji rozpuszczonej to roztwór ma stężenie równe:
30%
15%
15,8%
30,8%
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