NGSS Standards:

Performance Expectations (PE):

• 5-PS1-1. Develop a model to describe that matter is made of particles too small to be seen. 
• 5-PS1-2. Measure and graph quantities to provide evidence that regardless of the type of change that occurs when heating, cooling, or mixing substances, the total weight of matter is conserved.
• 5-PS1-3. Make observations and measurements to identify materials based on their properties.
• 5-PS1-4. Conduct an investigation to determine whether the mixing of two or more substances results in new substances.
• 5-PS3-1. Use models to describe that energy in animals’ food (used for body repair, growth, and motion and to maintain body warmth) was once energy from the sun.

Science and Engineering Practices (SEP):

• Planning and Carrying Out Investigations
• Asking Questions and Defining Problems
• Developing and using models. 
• Analyzing and interpreting data. 

Disciplinary Core Ideas (DCI):

• PS1.A: Structure and Properties of Matter
  • Matter of any type can be subdivided into particles that are too small to see, but even then the matter still exists and can be detected by other means. A model showing that gasses are made from matter particles that are too small to see and are moving freely around in space can explain many observations, including the inflation and shape of a balloon and the effects of air on larger particles or objects.
  • The amount (weight) of matter is conserved when it changes form, even in transitions in which it seems to vanish.
  • Measurements of a variety of properties can be used to identify materials. (Boundary: At this grade level, mass and weight are not distinguished, and no attempt is made to define the unseen particles or explain the atomic-scale mechanism of evaporation and condensation.)
• PS1.B: Chemical Reactions.
  • No matter what reaction or change in properties occurs, the total weight of the substances does not change. (Boundary: Mass and weight are not distinguished at this grade level.)

• • When two or more different substances are mixed, a new substance with different properties may be formed.

• PS3.D: Energy in Chemical Processes and Everyday Life
  • The energy released [from] food was once energy from the sun that was captured by plants in the chemical process that forms plant matter (from air and water).

• LS1.C: Organization for Matter and Energy Flow in Organisms
• • • Food provides animals with the materials they need for body repair and growth and the energy they need to maintain body warmth and for motion. (secondary)