Counting Atoms Final Review
Chemistry
10th Grade
NGSS covered
Used 2+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Directions: Write the quantity of atoms of each element opposite the formula of the compound for the quantity of formula units and molecules shown. 4K2CO3
K=8, C=4, O=12
K=4, C=2, O=6
K=2, C=4, O=8
K=6, C=4, O=10
Tags
NGSS.MS-PS1-1
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Directions: Write the quantity of atoms of each element opposite the formula of the compound for the quantity of formula units and molecules shown. 2Sr3(PO4)2
Sr=6, P=4, O=16
Sr=3, P=2, O=8
Sr=4, P=6, O=12
Sr=2, P=2, O=8
Tags
NGSS.MS-PS1-1
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the correct quantity of atoms of each element?
3N4O10
N=12, O=30
N=7, O=20
N=4, O=10
N=8, O=15
Tags
NGSS.MS-PS1-1
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Directions: Write the quantity of atoms of each element opposite the formula of the compound for the quantity of formula units and molecules shown. 2(NH4)3N
N=8, H=24
N=7, H=18
N=6, H=12
N=10, H=30
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Directions: Write the quantity of atoms of each element opposite the formula of the compound for the quantity of formula units and molecules shown.
8Cl2O
Cl=16, O=8
Cl=8, O=16
Cl=2, O=8
Cl=8, O=2
Tags
NGSS.MS-PS1-1
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Directions: Write the quantity of atoms of each element opposite the formula of the compound for the quantity of formula units and molecules shown. Ca(C2H3O2)2
Ca=1, C=4, H=6, O=4
Ca=2, C=2, H=3, O=2
Ca=1, C=2, H=3, O=2
Ca=2, C=4, H=6, O=8
Tags
NGSS.MS-PS1-1
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Directions: Write the quantity of atoms of each element opposite the formula of the compound for the quantity of formula units and molecules shown.
12NaBr
Na=12, Br=12
Na=24, Br=12
Na=6, Br=12
Na=12, Br=24
Tags
NGSS.MS-PS1-1
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