Sprawdzian z chemii: Łączenie sie atomów
Quiz
•
Chemistry
•
7th Grade
•
Medium
Dorota Baran
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24 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
W związku chemicznym NaCl występuje wiązanie:
jonowe
kowalencyjne spolaryzowane
kowalencyjne
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
4Al + 3O₂ → 2Al₂O₃ to reakcja :
wymiany
analizy
syntezy
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
W jakiej postaci występuje cząsteczka wodoru?
H
H2
2H
H3
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Wzór N2O5 to:
wzór strukturalny
wzór sumaryczny
wzór elektronowy
wzór kreskowy
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Różnica elektroujemności w wiązaniu kowalencyjnym niespolaryzowanym wynosi:
0
więcej niż 1,7
mniej niż 1,7
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Spalono 18 g węgla w 48 g tlenu. Ile CO2 powstało w tej reakcji?
C + O2 → CO2
66 g
30 g
126 g
44 g
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Do poniższej reakcji użyto 12,7 g miedzi i otrzymano 15,9 g tlenku miedzi (II). Ile użyto w tej reakcji tlenu?
2Cu + O2 → 2CuO
28,6 g
32 g
3,2 g
56 g
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