Który gaz stanowi 78% powietrza?

powietrze

Passage
•
Chemistry
•
8th Grade
•
Medium
Monika z
Used 4+ times
FREE Resource
30 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
tlen
azot
wodór
gazy szlachetne
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Co powstaje w wyniku reakcji tlenu z magnezem?
tlenek tlenu
tlenek magnezu i wodór
tlenek magnezu i woda
tlenek magnezu
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Pieczenia ciasta to reakcja
egzoenergetyczna
endogenna
endoenergetyczna
egzogenna
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Higroskopijność to?
pochłanianie zapachu
pochłanianie brudu
pochłanianie pary wodnej
roztapianie lodu
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co podtrzymuje spalanie?
dwutlenek węgla
tlen
azot
wodór
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Jaką barwę ma He?
niebieską
źółtą
białą
niebieską
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Czym jest powietrzę?
mieszanina niejednorodna
mieszanina jednorodna
związek chemiczny
pierwiastek chemiczny
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