Efnisheimurinn kafli 1 (10-2)
Quiz
•
Chemistry
•
10th Grade
•
Practice Problem
•
Medium
Jón Aðalsteinn Brynjólfsson
Used 40+ times
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28 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvernig fær maður efnafræðilega hreint vatn
með eimingu
það er ekki hægt
með storknun
annað
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvaða meginflokka má skipta efnum í
hrein efni og efnablöndur
hrein efni og frumefni
efnasambönd og hrein efni
efnablöndur og frumefni
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvaða vísindamaður var fyrstur til að sundra vatni í tvö efni
Antoine Lavoasier
Albert Einstein
Amedeo Avogadro
Jacob Berzelius
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvaða ár var vatni sundrað í frumefni í fyrsta skipti
1785
1770
1773
1794
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvernig finnur maður út hvort efni er frumefni eða efnasamband?
Skoða formúluna
Gera tilraun
Skoða litlu stafina
Skoða tölustafi
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvað er mjólk dæmi um?
Efnablöndu
Kúapiss
Frumefni
Efnasamband
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hvað stendur Li fyrir?
Liþín
Klór
Limíum
Litur
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