Common Polyatomic Ions
Authored by Chloe Hulen
Science
11th Grade
NGSS covered
Used 328+ times
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About
This quiz focuses on polyatomic ions, a fundamental topic in chemistry that falls squarely within the grade 11 curriculum. Students encounter ten essential polyatomic ions that they must memorize and recognize: nitrite, nitrate, ammonium, phosphate, phosphite, cyanide, hydroxide, sulfite, and sulfate. The questions assess students' ability to match ion names with their correct chemical formulas, including proper charges and subscripts. To succeed on this quiz, students need to understand that polyatomic ions are groups of atoms that carry an overall electric charge and function as single units in chemical compounds. They must differentiate between similar ions like nitrite (NO₂⁻) and nitrate (NO₃⁻), or sulfite (SO₃²⁻) and sulfate (SO₄²⁻), recognizing the pattern that "-ite" endings typically indicate one fewer oxygen atom than their "-ate" counterparts. Created by Chloe Hulen, a Science teacher in the US who teaches grade 11. This quiz serves as an excellent tool for reinforcing memorization of the most common polyatomic ions that students encounter throughout their chemistry studies. Teachers can deploy this quiz as a quick warmup at the beginning of class to activate prior knowledge, use it for individual practice to help students build confidence with formula recognition, or assign it as homework to reinforce classroom learning. The format works particularly well for formative assessment, allowing teachers to quickly identify which ions students have mastered and which require additional review before moving on to more complex topics like writing ionic compound formulas or balancing chemical equations. This content directly supports NGSS standard HS-PS1-1, which requires students to use the periodic table as a model to predict properties of elements and their compounds.
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nitrite
NO-2
NO-3
NH+4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Nitrate
NH+4
NO-3
NO-2
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-1
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ammonium
NO-2
NO-3
NH+4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phosphate
PO43-
PO33-
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Phosphite
PO43-
PO33-
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cyanide
CN-
OH-
CO32-
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Hydroxide
CO32-
OH-
CN-
Tags
NGSS.HS-PS1-2
NGSS.HS-PS1-5
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