
Chemia - klasa 7, test
Flashcard
•
Chemistry
•
7th - 8th Grade
•
Hard
Grzegorz Nalewaj
Used 3+ times
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9 questions
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1.
FLASHCARD QUESTION
Front
Wybierz gaz, który będzie najlepszy do wypełnienia balonu: Dwutlenek Węgla, Wodór, Hel, Metan.
Back
Hel
2.
FLASHCARD QUESTION
Front
Posążek Buddy wykonany ze złota (gęstość - 19,32 g/cm3) o masie 7728 g miałby objętość
Back
400 cm3
3.
FLASHCARD QUESTION
Front
Liczba atomowa określa
Back
liczbę protonów w jądrze atomu
4.
FLASHCARD QUESTION
Front
Wskaż grupę izotopów tego samego pierwiastka chemicznego: 4020E, 4019E, 4018E,, 2412E, 2311E, 2613E,, 2412E, 2612E, 2512E,, 4020E, 4019E, 4120E,
Back
2412E, 2612E, 2512E,
5.
FLASHCARD QUESTION
Front
Jeżeli tlen gwałtownie łączy się z pierwiastkiem i towarzyszy temu świecenie oraz wydzielanie ciepła, to jest to reakcja
Back
spalania
6.
FLASHCARD QUESTION
Front
Oblicz, ile dwutlenku węgla powstało w takiej reakcji, jeżeli ze 100 g CaCO3 otrzymano 56 g CaO. (reakcja: CaCO3 => CaO + CO2)
Back
44g
7.
FLASHCARD QUESTION
Front
W celu zmniejszenia zanieczyszczeń powietrza należy
Back
zakładać filtry oczyszczające gazy w zakładach przemysłowych.
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