Chemie 3. A (1. pol) (chem. reakce - oxidy)
Quiz
•
World Languages
•
7th Grade
•
Practice Problem
•
Hard
Zbyněk Novák
Used 3+ times
FREE Resource
Enhance your content in a minute
40 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
10 mins • 5 pts
__ Na + __ H2O ---> __ NaOH + __ H2
2.
FILL IN THE BLANK QUESTION
10 mins • 5 pts
__ Fe + __ O2 --> __ Fe2O3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Látky, které do reakce vstupují a píší se v rovnici doleva nazýváme...
produkty
reaktanty
reduktanty
oxidanty
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Látky, které z reakce vystupují a píšeme je v reakci doprava nazýváme...
produkty
reaktanty
reduktanty
oxidanty
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Proč vyčíslujeme chemické rovnice?
just for fun
dělá nám to dobře jochohó
protože vznikají nové látky a původní zanikají
abychom znázornili zákon o zachování hmotnosti
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
V molekule vody se vyskytují...
2 atomy kyslíku a 1 atom vodíku
2 atomy vodíku a 1 atom kyslíku
nevyskytují se tam žádné atomy
atom dusíku, atom kyslíku a vzácné plyny
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Co je to molekula?
spojení vazeb
část atomu
spojení dvou a více atomů
sestra folekuly
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