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Writing formulas for polyatomic compounds
Presentation
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
Standards-aligned
Robert Ceglie
FREE Resource
7 Slides • 7 Questions
1
2
3
Multiple Choice
Why is it important to use parentheses when writing formulas for polyatomic compounds with multiple subscripts?
To indicate the presence of more than one polyatomic ion
To make the formula look more organized
To separate cations and anions
To show the charge of the ion
4
Open Ended
How do you determine the correct formula for a compound formed between a metal and a polyatomic ion?
5
6
7
Multiple Choice
Which of the following are correct formulas for the compounds formed from the following pairs? 1) Strontium and sulfide 2) Rubidium and phosphate 3) Gold (III) and nitrate 4) Antimony (III) and phosphite
SrSO3, Rb3PO4, AuNO3, SbPO3
SrS, RbPO4, Au(NO3)3, Sb(PO3)3
SrSO4, Rb3PO3, Au(NO2)3, SbPO4
SrS2, Rb2PO4, Au(NO3)2, Sb3PO3
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9
Fill in the Blanks
Fill in the blank: The name of the cation in a polyatomic compound is the name of the
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11
12
Multiple Choice
Which of the following is the correct name for the compound NaNO2?
Sodium nitrite
Sodium nitrate
Sodium nitride
Sodium dioxide
13
Dropdown
MgSO4
14
Match
Match the following
sulfate
phosphate
sulfide
carbonate
ammonium
SO4 -2
PO4 -3
S-2
CO3 -2
NH4 +1
SO4 -2
PO4 -3
S-2
CO3 -2
NH4 +1
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