Chemical Formulas and Atom Counting
Authored by Emily Jordan
Science
6th - 8th Grade
NGSS covered
Used 13+ times
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20 questions
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1.
MATCH QUESTION
1 min • 5 pts
Use the formula for two molecules of zinc nitrate to answer the questions below: 2Zn(NO3)2
16
Total number of atoms in the compound
2
Coefficient number
2
Number of Oxygen atoms
3
Number of different elements?
6
Number of Zinc atoms
Tags
NGSS.MS-PS1-1
2.
MATCH QUESTION
1 min • 4 pts
Use the formula for ammonium sulfate to answer the questions below: (NH4)2SO4
15
Number of oxygen atoms
4
Number of total atoms
2
Number of different elements
4
Number of nitrogen atoms
Tags
NGSS.MS-PS1-1
3.
MATCH QUESTION
1 min • 4 pts
Use the formula for sucrose (a type of sugar) to answer the questions below: C12H22O11.
45
Number of total atoms
3
Number of oxygen atoms
22
Number of different elements
11
Number of hydrogen atoms
Tags
NGSS.MS-PS1-1
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following formulas contain four atoms of hydrogen? Choose two correct answers.
2H2CO3
H2O2
C2H6
C2H4O2
2NH3
Tags
NGSS.MS-PS1-1
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A ___________ tells how many molecules are present in a chemical formula.
subscript
coefficient
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A ___________ tells how many atoms of each element are present in a chemical formula.
subscript
coefficient
7.
FILL IN THE BLANKS QUESTION
1 min • 1 pt
How many atoms of Hydrogen (H) are on the Reactants side of this equation?
(a)
Tags
NGSS.MS-PS1-1
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