Characteristic Properties of Matter

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Essential Questions: 

How do we know when two substances are different?
What is the difference between a property of an object and a property of a substance?
What is the relationship between the mass of an object and the volume of an object?

Content: 


density, boiling point, freezing point are independent of the size and shape of objects,
density, boiling point and freezing point are characteristic properties of matter.

Skills and Processes: 


1- determine the freezing points of substances such as water, salt water, naphthalene, paradichlorobenzene,
2- determine the melting points of the same substances,
3- organize and collect data over time.
4- graph data using appropriate scale, units and labels.
5- interpret data on a graph.
6- determine boiling points of substances.
7- distinguish between substances using boiling point.
8- determine density of regular solids, irregular solids.
9- determine density of liquids and gases.
10- use significant figures in division and multiplication calculations.
11- properly use scientific notation.
12- distinguish and identify unknown substances by comparing experimental data with accepted values.

Assessment: 


comprehensive unit test,
practical laboratory exam in which they must distinguish between three unknown liquids,
cooperative group project in which they will create a classroom density gradient using liquids of unknown density and miscibility

Resources: 

Introductory Physical Science, 7th edition, Haber-Schiam,Cutting, Kirksey, Pratt

Multicultural Dimension: 

Refer to Fall term