School Improvement in Maryland

Using the State Curriculum: Science, Grade 2




State Curriculum Toolkit

Tools aligned to State Curriculum indicators and/or objectives.

  • Introduction for Standard or Indicator

Standard 4.0 Chemistry

Students will use scientific skills and processes to explain the composition, structure, and interactions of matter in order to support the predictability of structure and energy transformations.


A. Structure of Matter


  • 1. Cite evidence from investigations that most things are made of parts.
  1. Examine a variety of objects, such as toys, objects made from Legos or Tinker Toys to identify and describe the parts from which they are made.
  2. Take objects apart and rearrange the parts to identify and describe the ways the parts work together.
  3. Ask and seek answers to "What if" questions about the changes made to the objects and how they affect the way objects work, for example, if a part were left out of the object would it make a difference in how the object works?


B. Conservation of Matter


  • 1. Provide evidence from investigations that things can be done to materials to change some of their properties.
  1. Based on evidence from investigations describe that materials, such as clay are not changed by certain actions, such as reshaping or breaking into pieces.
  2. Ask and seek answers to questions about what happened to the materials if other things were done to them, such as being placed in a freezer, heated, etc.


D. Physical and Chemical Changes


  1. Based on investigations, describe what changes occur to the observable properties of various materials when they are subjected to the processes of wetting, cutting, bending, and mixing.
  2. Compare the observable properties of objects before and after they have been subjected to various processes.
  3. Ask and seek answers to "What if" questions about what might happen to the materials if different processes, such as heating, freezing, and dissolving were used to change them.

January 2008