Texas Essential Knowledge and Skills Teaching Resources

Science 2.5

Matter and energy. The student knows that matter has physical properties and those properties determine how it is described, classified, changed, and used. The student is expected to:

  • (1) classify matter by physical properties, including relative temperature, texture, flexibility, and whether material is a solid or liquid;
    • (A) compare changes in materials caused by heating and cooling;
    • (B) demonstrate that things can be done to materials such as cutting, folding, sanding, and melting to change their physical properties; and
    • (C) combine materials that when put together can do things that they cannot do by themselves such as building a tower or a bridge and justify the selection of those materials based on their physical properties.


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