Standards Map

Science and Technology/Engineering > Grade 2 > Physical Science
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Science and Technology/Engineering | Grade : 2

Discipline - Physical Science

Core Idea - Matter and Its Interactions

[2.PS.1.4] - Construct an argument with evidence that some changes to materials caused by heating or cooling can be reversed and some cannot. Clarification Statements: Examples of reversible changes could include materials such as water and butter at different temperatures; Examples of irreversible changes could include cooking an egg, freezing a plant leaf, and burning paper.

Resources:

Predecessor Standards:

  • K.PS.1.1
    Investigate and communicate the idea that different kinds of materials can be solid or liquid depending on temperature. Clarification Statements: Materials chosen must exhibit solid and liquid states in a reasonable temperature range for kindergarten students (e.g., 0–80°F), such as water, crayons, or glue sticks; Only a qualitative description of temperature, such as hot, warm, and cool, is expected.

Successor Standards:

  • 5.PS.1.2
    Measure and graph the weights (masses) of substances before and after a reaction or phase change to provide evidence that regardless of the type of change that occurs when heating, cooling, or combining substances, the total weight (mass) of matter is conserved. Clarification Statement: Assume that reactions with any gas production are conducted in a closed system. State Assessment Boundary: Distinguishing mass and weight is not expected in state assessment.

Same Level Standards:

  • W.2.2
    Write informative/explanatory texts that introduce a topic, use facts and definitions to develop points, and provide a concluding statement or section.
  • 2.ETS.1.3
    Analyze data from tests of two objects designed to solve the same design problem to compare the strengths and weaknesses of how each object performs.* Clarification Statements: Data can include observations and be either qualitative or quantitative; Examples can include how different objects insulate cold water or how different types of grocery bags perform.