physical and chemical properties

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Physical and Chemical Properties

Big Picture

MS-PS1-2Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.

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Do NowIf you were asked to describe an orange to someone who had never seen an orange, what would you tell the person?

Write your response in your science journal.

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Objectives

Identify physical and chemical properties of matter and how matter can undergo physical and chemical changes.

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Agenda

Today we will:•Watch a video on physical and chemical properties.•Complete a group activity worksheet.•Do an individual assessment worksheet.•Review and exit ticket.

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Vocabulary

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• physical property

• chemical property

• physical change

• chemical change



Section 2 Physical Properties

Physical Properties

• What Are Physical Properties? A physical property of matter can be observed or measured without changing the matter’s identity.

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Section 2 Physical PropertiesChapter K1



Section 2 Physical Properties

Physical Properties, continued• Identifying Matter You use physical properties to

identify matter.

• Density Density is the amount of matter in a given space, or volume. The two balls below have different densities.

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Section 3 Chemical Properties

Chemical Properties• Comparing Physical and Chemical Properties

You can observe physical properties without changing the identity of the substance. Chemicals properties are more difficult to observe.

• Characteristic Properties The properties that are most useful in identifying a substance are characteristic properties.

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Comparing Physical and Chemical Properties

Click below to watch the Visual Concept.

You may stop the video at any time by pressing the Esc key.

Visual Concept

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Chemical Changes and New Substances• What Happens During a Chemical Change?

During a chemical change a substance changes chemical properties.

• Signs of Chemical Changes Some common signs of chemical changes includes a change in color, odor, production of heat, fizzing, and so on.

• Matter and Chemical Changes Chemical changes change the identity of the matter involved.

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Section 3 Chemical PropertiesChapter K1




Physical Versus Chemical Changes

• A Change in Composition Physical changes do not change the composition of a substance while chemical changes do.

• Reversing Changes Many physical changes are easily reversed, but most chemical changes cannot easily be reversed.

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Click below to watch the Visual Concept.

You may stop the video at any time by pressing the Esc key.


Comparing Physical and Chemical Changes

Visual Concept

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Homework

Complete worksheet

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physical and chemical properties

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