
Isótopos e massa atómica relativa
Quiz
•
Chemistry
•
8th - 9th Grade
•
Medium

Margarida A
Used 13+ times
FREE Resource
14 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quando se diz que a massa atómica relativa do cálcio
é 40, isso significa que:
o átomo de cálcio tem 40 protões.
a massa dos átomos de cálcio é, em média, 40 vezes
maior do que a massa do padrão.
a massa do átomo de cálcio é 40 g.
o número de partículas existentes no núcleo do átomo de cálcio é 40.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Os isótopos de um elemento são átomos diferentes
que têm em comum:
o número de neutrões
o número de protões
o número de nucleões
o número de massa
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
20 protões e 19 neutrões.
39 protões e 19 neutrões.
19 protões e 20 neutrões
19 protões e 39 neutrões
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A massa atómica relativa de um átomo de magnésio constituido por 12 protões, 12 eletrões e 12 neutrões é aproximadamente ...
0
12
24
36
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
34.9
35.5
36.3
3.1
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A
B
C
D
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