Keemiline element
7th Grade
•10 Qs
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Keemiline element
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Medium
Külli Praakli
Used 2+ times
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Raua tähis on ...
Be
Re
Fe
He
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kloor on keemiline element mille aatomnumber on 17. Ta asub seitsmendas rühmas ja 3 perioodis. Tal on
7 elektronkihti
5 elektronkihti
3 elektronkihti
1 elektronkiht
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Teisele elektronkihile mahub ..
8 elektroni
6 elektroni
4 elektroni
2 elektroni
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fosfori tähis on ...
S
P
O
N
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Rakuhingamisel on vaja ..
lämmastikku
vesinikku
süsinikku
hapnikku
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kaltsiumi järjekorra number on 20 ja tema elektronid tiirutavad 4 kihil. Mitu elektroni on kaltsimil viimasel ehk neljandal kihil?
2 elektroni
3 elektroni
4 elektroni
5 elektroni
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Alumiiniumi tähis on ....
Cl
Al
El
Sl
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