Free Printable WorksheetScienceGrade 11Science CurriculumNGSS SEPs/CCCs and HS-PS1-1 through HS-PS1-8; CCSS RST.11-12.7-9; HSN-Q.A.1-3; AP Chem Science Practices 1-6

11.138 Cause and Effect in Chemical Systems Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Chemistry Science worksheet provides structured practice on 11.138 Cause and Effect in Chemical Systems. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Cause and Effect in Chemical Systems: Trace causal mechanisms connecting structure, energy, collisions, equilibrium, and macroscopic observations. Aligned to NGSS, CCSS, AP Chemistry/Pre-AP Chemistry, and representative state chemistry framework crosswalks; NGSS SEPs/CCCs and HS-PS1-1 through HS-PS1-8; CCSS RST.11-12.7-9; HSN-Q.A.1-3; AP Chem Science Practices 1-6 - Cause and Effect in Chemical Systems Chemistry Standards Crosswalk: National: NGSS SEPs/CCCs and HS-PS1-1 through HS-PS1-8; CCSS RST.11-12.7-9; HSN-Q.A.1-3; AP Chem Science Practices 1-6. State frameworks: Cumulative crosswalk to TX TEKS, CA/NY/NJ NGSS-aligned standards, MA STE, FL NGSSS, GA GSE, and VA SOL Chemistry.

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 11.138 Cause and Effect in Chemical Systems skill assessments:

Problem 1Difficulty: Mastery

A flask reaction produces CO2 gas and is left open to the air. Compared with a closed flask, product formation continues farther. Which cause-and-effect explanation is best?

AAir adds extra CO2, so the reaction shifts toward reactants.

BOpen flasks change the law of conservation of atoms inside chemical equations.

CGas escape proves the reaction no longer has an equilibrium tendency.

DCO2 escapes from the system, lowering product concentration and shifting the reaction toward more gas formation.

Solution & Explanation:Removing a product from the reaction system lowers its effective concentration. For a reversible process, that disturbance can drive additional product formation.

Problem 2Difficulty: Mastery

A small amount of NH3(aq) is added to a cloudy AgCl mixture, and the solid partly dissolves as Ag(NH3)2+ forms. Which cause best explains the dissolving?

ANH3 raises Ksp by changing the temperature of every ion.

BNH3 changes chloride ions into silver atoms.

CComplex-ion formation lowers free Ag+ concentration, shifting AgCl(s) dissolution forward.

DThe solid dissolves because AgCl is no longer conserved.

Solution & Explanation:When NH3 binds Ag+, it removes free Ag+ from the solubility equilibrium. Lower [Ag+] makes Qsp smaller, so more AgCl dissolves to replace Ag+.

Problem 3Difficulty: Mastery

A weak acid HA is diluted with water. Its molar concentration decreases, but percent ionization increases. Which causal explanation is best?

ADilution changes HA into a strong acid with K much larger than before.

BDilution lowers ion concentrations, so the equilibrium shifts right to produce a greater fraction of ions.

CWater removes all H+ ions, so no ionization can occur.

DPercent ionization must decrease whenever concentration decreases.

Solution & Explanation:For a weak acid equilibrium, dilution reduces product concentrations in Q. The system shifts toward ionization, increasing the fraction ionized even as total concentration falls.

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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 SEPs/CCCs and HS-PS1-1 through HS-PS1-8; CCSS RST.11-12.7-9; HSN-Q.A.1-3; AP Chem Science Practices 1-6 (National: NGSS SEPs/CCCs and HS-PS1-1 through HS-PS1-8; CCSS RST.11-12.7-9; HSN-Q.A.1-3; AP Chem Science Practices 1-6. State frameworks: Cumulative crosswalk to TX TEKS, CA/NY/NJ NGSS-aligned standards, MA STE, FL NGSSS, GA GSE, and VA SOL Chemistry.).