
CHEMIJOS EGZAMINAS
Quiz
•
Chemistry
•
3rd Grade
•
Hard
Elvyra Ajauskaite
Used 3+ times
FREE Resource
31 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Koks pokytis įvyksta, aliuminio atomui virstant aliuminio jonu?
A Aliuminio atomas netenka trijų protonų.
B Aliuminio atomas netenka trijų elektronų.
C Aliuminio atomas prisijungia tris protonus.
D Aliuminio atomas prisijungia tris elektronus.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuriam oksidui būdingos stipriausios rūgštinės savybės? D P2O5
A SO2
B SO3
C SeO2
D P2O5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kurioje eilutėje cheminiai elementai surašyti jų atomo spindulio mažėjimo kryptimi?
A Ca > K > Mg
B Mg > K > Ca
C K > Ca > Mg
D Mg > Ca > K
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuri medžiaga yra deguonies alotropinė atmaina1 ?
A Grafitas
B Ozonas
C Grafenas
D Deimantas
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kurios iš šių molekulių sudaro vandenilinius ryšius su vandens molekulėmis?
A Tik I
B Tik I irIII
C Tik II ir III
D I, II ir III
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kuriuos vandeninius druskų tirpalus sumaišius, įvyks mainų reakcija? A AgNO3(aq) ir NaF(aq)
A AgNO3(aq) ir NaF(aq)
B Ba(NO3)2(aq) ir K2S(aq)
C Ba(NO3)2(aq) ir CaCl2(aq)
D Ca(CH3COO)2(aq) ir Na3PO4(aq)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Iš kurios žaliavos pramonėje gaunamos deguonies dujos?
A Oro
B Gamtinių dujų
C Geležies rūdos
D Kalio permanganato
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