Free Printable WorksheetScienceGrade 11Science CurriculumNGSS HS-PS1-2, HS-PS1-7; AP Chem Unit 4; Pre-AP Unit 4; CCSS HSN-Q.A.1-3, MP2, MP6

11.61 Reaction Classification Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Chemistry Science worksheet provides structured practice on 11.61 Reaction Classification. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Reaction Classification: Classify synthesis, decomposition, single-replacement, double-replacement, combustion, acid-base, precipitation, and redox reactions. Aligned to NGSS, CCSS, AP Chemistry/Pre-AP Chemistry, and representative state chemistry framework crosswalks NGSS HS-PS1-2, HS-PS1-7; AP Chem Unit 4; Pre-AP Unit 4; CCSS HSN-Q.A.1-3, MP2, MP6 - Reaction Classification Chemistry Standards Crosswalk: National: NGSS HS-PS1-2, HS-PS1-7; AP Chem Unit 4; Pre-AP Unit 4; CCSS HSN-Q.A.1-3, MP2, MP6. State frameworks: TX TEKS 112.43(c)(9), (11), (12); FL SC.912.P.8.7-8.10; MA HS-PS1-9(MA), HS-PS1-10(MA); CA/NY/NJ HS-PS1-7; GA/VA reaction and stoichiometry standards.

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Chemistry

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 11.61 Reaction Classification skill assessments:

Problem 1Difficulty: Mastery

For 2KBr(aq) + Cl2(aq) -> 2KCl(aq) + Br2(aq), which classification pair is most accurate?

AAcid-base and precipitation

BDecomposition and combustion

CSynthesis and neutralization

DSingle-replacement and redox

Solution & Explanation:Chlorine replaces bromine in the compound, and halogen oxidation states change, so it is single-replacement and redox.

Problem 2Difficulty: Mastery

In Cr2O7²-(aq) + 14H+(aq) + 6Fe²+(aq) -> 2Cr³+(aq) + 7H2O(l) + 6Fe³+(aq), Fe²+ becomes Fe³+ and chromium is reduced. Which classification is best?

APrecipitation

BCombustion

CRedox

DDouble-replacement only

Solution & Explanation:Iron is oxidized and chromium is reduced, so oxidation-number changes identify the reaction as redox.

Problem 3Difficulty: Mastery

Which reaction is both double-replacement and acid-base neutralization but not precipitation?

ABaCl2(aq) + Na2SO4(aq) -> BaSO4(s) + 2NaCl(aq)

BHNO3(aq) + LiOH(aq) -> LiNO3(aq) + H2O(l)

CCl2(aq) + 2KBr(aq) -> 2KCl(aq) + Br2(aq)

DCaCO3(s) -> CaO(s) + CO2(g)

Solution & Explanation:The acid and base exchange partners to form water and a soluble salt; no insoluble solid is produced.

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Frequently Asked Questions

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Chemistry Science students. It aligns with educational standard NGSS HS-PS1-2, HS-PS1-7; AP Chem Unit 4; Pre-AP Unit 4; CCSS HSN-Q.A.1-3, MP2, MP6 (National: NGSS HS-PS1-2, HS-PS1-7; AP Chem Unit 4; Pre-AP Unit 4; CCSS HSN-Q.A.1-3, MP2, MP6. State frameworks: TX TEKS 112.43(c)(9), (11), (12); FL SC.912.P.8.7-8.10; MA HS-PS1-9(MA), HS-PS1-10(MA); CA/NY/NJ HS-PS1-7; GA/VA reaction and stoichiometry standards.).