Subscripts, Coefficients, and Counting Atoms

Quiz
•
Science
•
8th Grade
•
Hard
Standards-aligned
Lisa Thompson
FREE Resource
15 questions
Show all answers
1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
How many atoms/ions are in one formula unit of Zn(C2H3O2)2 ?
Tags
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many different elements are present in H2COCH2
5
4
3
2
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which equation obeys the law of conservation of mass?
H2 + O2 ------> H20
C + 2H2 ----> CH4
2Fe2O3 ------> 2O2 + 4Fe
Tags
NGSS.MS-PS1-5
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A subscript is the small number below the element symbol that tells the number of _______ of that element.
atoms
valence electrons
protons
elements
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many Hydrogen atoms are in 4H2O?
6
8
2
4
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many Oxygen atoms are in H2O?
1
2
0
4
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
How many Nitrogen atoms are in (NH₄)₂CrO₄?
1
2
8
16
Tags
NGSS.MS-PS1-1
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