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__Title__: Phases of the matter __Description__: Basis introduction – Definition of : “ what is Solid, what is liquid and what is a gas? Many of us have seen water change from a solid to a liquid and from a liquid to a gas, and we know that other substances undergo similar transformations (although often under more extreme conditions). What these changes have in common is a change in temperature, a result of either heating or cooling. __Duration__: Three days __Learning Objectives__: Students will be able to determine the characteristic properties of substances and apply the knowledge to identify substances such as solids liquids and gases. __Materials__: ● Ice cubes ; ● Hot Plates ● Beakers __Step by Step Procedure__:

1. Compare and contrast the motion of particles for three states of matter: solid, liquid and gas. 2. Determine that liquids and solids have definite volume; 3. Determine that gases do not have a definite volume; 4. Determine that solids have a definite shape; 5. Determine that gases and liquids assume the shapes of containers; 6. Apply learned knowledge to derive the law of the motion of particles; 7. Determine that temperature affects the motion of particles.

__Grade Level(s)__: 7th Grade

__Related Standards__:

MST4.PS3: Matter is made up of particles whose properties determine the observable characteristics of matter and its reactivity.

MST4.PS4: Energy exists in many forms, and when these forms change energy is conserved. MST4.PS5: Energy and matter interact through forces that result in changes in motion.

__Submitted By__: Theresa Morales