
chemia7
Authored by Monia Lis
Chemistry
1st - 6th Grade

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6 questions
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1.
MULTIPLE CHOICE QUESTION
5 sec • 1 pt
potas
K
Mg
Cu
Na
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Nazwa wody
tlenek wodoru
mokra
ciekły
monotlenek diwodoru
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Liczby zapisywane przed symbolami atomów i wzorami cząsteczek to:
współczynniki stechiometryczne
indeksy stechiometryczne
równania reakcji chemicznych
wartościowości
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Który zapis równania reakcji:
węgiel + tlen → tlenek węgla (IV)
jest zapisany w sposób prawidłowy? Pamiętaj o bilansie reakcji chemicznej.
C + O2 --> CO2
C + 2O2 --> CO2
2C + O2 --> CO
C + 2O2 --> 2CO2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Wiedząc, że glin jest trójwartościowy, zaznacz właściwe wartości indeksów x i y we wzorze jego tlenku AlxOy.
x = 3, y = 2
x = 2, y = 3
x = 1, y = 3
x = 3, y = 1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Wskaż zestaw, w którym znajduje się błędnie zapisany wzór sumaryczny związku chemicznego.
SiO2, N3O2, Cl2O7
LiH, BaH2, CH4
K2O, Rb2O, Al2O3
HF, H2S, AlH3
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