Unit Objectives
By the end of 7 th grade, students will investigate, understand, and use facts, concepts, and principles that relate to matter and its properties.
7.2.1Investigate and understand matter and its properties
a. Develop an understanding of characteristic properties and explain how they are important
b. Compare mixtures and pure substances
c. Describe elements and compounds
d. Explain the difference between mass and weight
e. Measure mass and volume; calculate density
7.2.2 Investigate and understand phases of matter
a. Define and differentiate solids, liquids, and gases
b. Compare the particle motion in solids, liquids, and gases
c. Distinguish between physical and chemical changes
d. Explain how energy is involved in changes of matter
e. Compare and contrast the physical and chemical properties of metals, nonmetals, and metalloids
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