5-PS1-4
Performance Expectation: Conduct an investigation to determine whether the mixing of two or more substances results in new substances.
Clarification Statement: Examples of interactions forming new substances can include mixing baking soda and vinegar. Examples of interactions not forming new substances can include mixing baking soda and water.
Disciplinary Core Ideas:
CHEMICAL REACTIONS
When two or more different substances are mixed, a new substance with different properties may be formed. (UE.PS1B.a)
Science and Engineering Practices: Planning and carrying out Investigations: Planning and carrying out investigations to answer questions or test solutions to problems in 3–5 builds on K–2 experiences and progresses to include investigations that control variables and provide evidence to support explanations or design solutions.
• Plan and conduct an investigation collaboratively to produce data to serve as the basis for evidence, using fair tests in which variables are controlled and the number of trials considered.
Crosscutting Concepts:
CAUSE AND EFFECT
Cause and effect relationships are routinely identified, tested, and used to explain change.