Difference between revisions of "MS-PS1-5"
From NY Science Standards Wiki
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| + | | topic = Conservation of Matter | ||
| ls = Develop and use a model to describe how the total number of atoms does not change in a chemical | | ls = Develop and use a model to describe how the total number of atoms does not change in a chemical | ||
reaction and thus mass is conserved. | reaction and thus mass is conserved. | ||
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| − | | rowspan="2" style="background-color:white;" | [[Spring 2026 Grade 8 Science Test|Spring 2026]] | + | | rowspan="2" style="background-color:white;" | [[Spring 2026 Grade 8 Science Test|Spring 2026 Grade 8 Test]] |
| style="background-color:white;" | [[Questions:Ammonia and the Nitrogen Cycle|Ammonia and the Nitrogen Cycle]] | | style="background-color:white;" | [[Questions:Ammonia and the Nitrogen Cycle|Ammonia and the Nitrogen Cycle]] | ||
| style="background-color:white;" | [[Questions:Ammonia and the Nitrogen Cycle#q2|Question 26]] | | style="background-color:white;" | [[Questions:Ammonia and the Nitrogen Cycle#q2|Question 26]] | ||
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| style="background-color:white;" | [[Questions:Hard-Boiled Eggs#q4|Question 42]] | | style="background-color:white;" | [[Questions:Hard-Boiled Eggs#q4|Question 42]] | ||
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| − | | style="background-color:white;" | [[Spring 2025 Grade 8 Science Test|Spring 2025]] | + | | style="background-color:white;" | [[Spring 2025 Grade 8 Science Test|Spring 2025 Grade 8 Test]] |
| style="background-color:white;" | [[Questions:Rust|Rust]] | | style="background-color:white;" | [[Questions:Rust|Rust]] | ||
| style="background-color:white;" | [[Questions:Rust#q2|Question 25]] | | style="background-color:white;" | [[Questions:Rust#q2|Question 25]] | ||
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| − | | style="background-color:white;" | [[Spring 2024 Grade 8 Science Test|Spring 2024]] | + | | style="background-color:white;" | [[Spring 2024 Grade 8 Science Test|Spring 2024 Grade 8 Test]] |
| style="background-color:white;" | [[Questions:The Chemistry of Propane|The Chemistry of Propane]] | | style="background-color:white;" | [[Questions:The Chemistry of Propane|The Chemistry of Propane]] | ||
| style="background-color:white;" | [[Questions:The Chemistry of Propane#q3|Question 51]] | | style="background-color:white;" | [[Questions:The Chemistry of Propane#q3|Question 51]] | ||
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| − | | style="background-color:white;" | [[Middle School Sample Question Clusters| | + | | style="background-color:white;" | [[Middle School Sample Question Clusters|Middle school sample clusters]] |
| style="background-color:white;" | [[Questions:Investigating Chemical Reactions|Investigating Chemical Reactions]] | | style="background-color:white;" | [[Questions:Investigating Chemical Reactions|Investigating Chemical Reactions]] | ||
| style="background-color:white;" | [[Questions:Investigating Chemical Reactions#q3|Question 3]] | | style="background-color:white;" | [[Questions:Investigating Chemical Reactions#q3|Question 3]] | ||
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| TOPIC = MS. Chemical Reactions | | TOPIC = MS. Chemical Reactions | ||
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Revision as of 13:03, 13 October 2026
Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
Clarification statement: Emphasis is on the law of conservation of matter and on physical models or drawings, including digital forms, that represent atoms.
Assessment boundary: Assessment does not include the use of atomic masses, balancing symbolic equations, or intermolecular forces.
Grade 8 Science Test Questions
Released New York State Grade 8 science test questions that assess MS-PS1-5 are listed here by test and question cluster. Each link opens the question with its answer key.
Performance Level Descriptions
Every Grade 8 Science Test question on MS-PS1-5 is written to match one of the performance level descriptions (PLDs) below.
Level 1: Given a model showing a chemical reaction, identify evidence that proves the total number of atoms is conserved.
Level 2: Given a model, describe how the total number of each type of atom does not change in a chemical reaction and/or that mass is conserved.
Level 3: Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
Level 4: Develop and use a model (including balanced equations and/or atomic masses) to describe how the total number of each type of atom does not change in a chemical reaction and because of this, mass is conserved.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of MS-PS1-5.
This section could be expanded upon. You can help out by adding to this section.
NGSS Dimensions
Performance expectation MS-PS1-5 was developed using the following elements from the NRC document A Framework for K-12 Science Education:
Science and Engineering Practices
- Developing and Using Models
- Develop a model to describe unobservable mechanisms.
Disciplinary Core Ideas
- PS1.B: Chemical Reactions
- (NYSED) Substances react chemically in characteristic ways. When substances react, the atoms that make up the molecules rearrange, forming new substances with different properties.
- The total number of atoms does not change in a chemical reaction and thus mass is conserved.
Crosscutting Concepts
- Energy and Matter
- Matter is conserved because atoms are conserved in physical and chemical processes.