Quant saps de química?
6th - 8th Grade
•12 Qs
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Quant saps de química?
Quiz
•
Chemistry
•
6th - 8th Grade
•
Practice Problem
•
Hard
Maria Elena López Adebjär
Used 1+ times
FREE Resource
Enhance your content in a minute
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La densitat és la relació entre la massa i el volum d'una substància.
CERT
FALS
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La quantitat de matèria es mesura en:
grams
quilograms
mols
Answer explanation
Recorda que hi ha una relació entre la quantitat de matèria (mol) i la massa (grams), la massa molecular.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quan mesclam aigua i sal té lloc un canvi químic (reacció química)
CERT
FALS
Answer explanation
Per mètodes físics podem tornar a tenir la sal i l'aigua inicial, per cristal·lització.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Les unitats de velocitat, en el sistema internacional (SI), són:
milles
m/s
km/h
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Indica quin d'aquests factors de conversió és erroni (no està ben fet)
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Selecciona la notació científica correcta de 0,00045321
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
0,00000901
9010000
901000000
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