HS-PS1-5

Apply scientific principles and evidence to explain how the rate of a physical or chemical change is affected when conditions are varied.

Clarification statement: Explanations should be based on three variables in collision theory: number of collisions per unit time, particle orientation on collision, and energy required to produce the change. Conditions that affect these three variables include temperature, pressure, nature of reactants, concentrations of reactants, mixing, particle size, surface area, and addition of a catalyst.

Assessment boundary: Assessment is limited to simple reactions in which there are only two reactants and to specifying the change in only one condition at a time.

Resources

Examples and discussion of resources for the learning, teaching, and assessment of HS-PS1-5.

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Assessment

What assessment of HS-PS1-5 might look like on a NY state exam.

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NGSS Dimensions

Performance expectation HS-PS1-5 was developed using the following elements from the NRC document A Framework for K-12 Science Education:

Science and engineering practices

Disciplinary core ideas

Crosscutting concepts

Connections to Other Standards

HS-PS1-5 connections to ELA, math, and other science standards as outlined by the NYS Education Department:

Page contributors:

Chemistry | HS. Chemical Reactions