Atom. Element chimic

Atom. Element chimic

7th Grade

10 Qs

quiz-placeholder

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Atom. Element chimic

Atom. Element chimic

Assessment

Quiz

Science

7th Grade

Practice Problem

Hard

Created by

Mihaela M

Used 3+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Numărul atomic Z reprezintă

Numărul de electroni din nucleul unui atom.
Numărul de neutroni din nucleul unui atom.
Numărul de molecule din nucleul unui atom.
Numărul de protoni din nucleul unui atom.

2.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Reprezintă simbolurile chimice ale unor metale

Ca

Pb

Br

K

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Elementul al cărui simbol nu începe cu litera S este

sulf

Sodiu

Siliciu

staniu

4.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Sunt metale alcaline (din grupa 1)

Litiu

Calciu

Potasiu

Aluminiu

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Sunt halogeni (elemente din grupa 17 - VII A)

siliciu

clor

fluor

brom

6.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Nu este un gaz nobil

neon

kripton

azot

heliu

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

Au pe ultimul strat 2 electroni

beriliu

aluminiu

magneziu

bariu

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