EXAMEN 2 BC QUIMICA

Quiz
•
Science
•
10th Grade
•
Hard
Mayra Lino
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Es el compuesto responsable del olor característico del ajo.
La esitosina
La hemoxitocilina
La alicina
Los plagicidas.
2.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Es la unión de átomos en proporciones definidas.
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Lee y selecciona la respuesta al siguiente problema: ¿Cuál es la masa expresada en gramos, de una partícula de boro? B=10
6,26x1015g B
1,56x1021g B
1,66x1023g B
2,26x108 g B
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Son aquellas que indican el número de átomos que tienen cada elemento.
fórmulas científicas
fórmulas empíricas
fórmulas descriptivas
fórmulas moleculares
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
¿Cuántas moléculas de plata hay en 0,35 g de este elemento?
Ag=108
1,32x1011 partículas Ag
1,95x1021 moléculas Ag.
5,82x108 moléculas Ag
76,82x1054 moléculas Ag
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Es la masa promedio de todos los isótopos de un elemento que ocurren naturalmente.
número de electrones
peso atómico
masa molecular
número atómico
7.
FILL IN THE BLANK QUESTION
5 mins • 1 pt
Es una unidad de medida de cantidad de sustancia utilizada en Química.
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