
Clasa a 7-a IAC
Authored by Robert Rosu
Chemistry
7th Grade

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Structura atomului este alcatuita din....
Nucleu si invelis electronic
Protoni si neutroni
Nucleu si protoni
Neutroni si invelis electronic
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nucleul atomului este format din...
electroni si neutroni
protoni si electroni
protoni si neutroni
doar electroni
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce reprezinta elementul chimic "Mg"?
Mangan
Magneziu
Mendeleviu
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce reprezinta elementul chimic "Ra"?
Radon
Radiu
Rodiu
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pentru atomul de "Ca" cu numarul atomic 20, indicati numarul de electroni.
20
15
19
25
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ce reprezinta invelisul electronic?
Învelișul electronic reprezintă totalitatea electronilor care orbitează în jurul nucleului atomic.
Învelișul electronic reprezintă totalitatea protonilor care orbitează în jurul nucleului atomic.
Învelișul electronic reprezintă totalitatea neutronilor care orbitează în jurul nucleului atomic.
Învelișul electronic reprezintă totalitatea electronilor si protonilor care orbitează în jurul nucleului atomic.
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