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Slide 1 of 26 Chemistry. © Copyright Pearson Prentice Hall Slide 2 of 26 Properties of Matter > Describing Matter Properties can be classified as: a.

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Presentation on theme: "Slide 1 of 26 Chemistry. © Copyright Pearson Prentice Hall Slide 2 of 26 Properties of Matter > Describing Matter Properties can be classified as: a."— Presentation transcript:

1 Slide 1 of 26 Chemistry

2 © Copyright Pearson Prentice Hall Slide 2 of 26 Properties of Matter > Describing Matter Properties can be classified as: a. Physical: malleability, conductivity, density, color, odor, volume, mass, etc… b. Chemical: flammability, reactivity. 2.1

3 © Copyright Pearson Prentice Hall Slide 3 of 26 Properties of Matter > Describing Matter a. Extensive: a property that depends on the amount of matter in a sample b. Intensive: a property that depends on the type of matter in a sample. Physical Properties can be classified as:

4 © Copyright Pearson Prentice Hall Slide 4 of 26 Properties of Matter > Describing Matter Properties Physical Chemical Intensive Extensive Flammability & Reactivity Color,Odor,Density Mass,Volume,Length

5 Slide 5 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Describing Matter Extensive Properties Examples Mass Volume Weight Length 2.1

6 Slide 6 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Describing Matter Intensive Properties Examples Hardness Color Density Boiling/Melting Point Odor 2.1

7 © Copyright Pearson Prentice Hall Properties of Matter > Slide 7 of 26 Identifying Substances Do all samples of a substance have the same intensive properties? 2.1

8 Slide 8 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Identifying Substances Matter that has a uniform and definite composition is called a substance. 2.1

9 Slide 9 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Identifying Substances This sculpture of a falcon is made of gold. Gold is an example of a substance. 2.1

10 Slide 10 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Identifying Substances Every sample of a given substance has identical intensive properties because every sample has the same composition. Examples: elements and compounds 2.1

11 Slide 11 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Identifying Substances A physical property is a quality or condition of a substance that can be observed or measured without changing the substances composition. Hardness, color, conductivity, and malleability are examples of physical properties. 2.1

12 © Copyright Pearson Prentice Hall Slide 12 of 26 Properties of Matter > States of Matter Three commonly discussed states of matter are solid, liquid, and gas. (others: Plasma, Bose Einstein Condensate) 2.1

13 Slide 13 of 26 © Copyright Pearson Prentice Hall Properties of Matter > States of Matter Solids A solid is a form of matter that has a definite shape and volume. 2.1

14 Slide 14 of 26 © Copyright Pearson Prentice Hall Properties of Matter > States of Matter Liquid A liquid is a form of matter that has an indefinite shape, flows, yet has a fixed volume. 2.1

15 Slide 15 of 26 © Copyright Pearson Prentice Hall Properties of Matter > States of Matter Gases A gas is a form of matter that takes both the shape and volume of its container. (indefinite shape and volume) 2.1

16 Slide 16 of 26 © Copyright Pearson Prentice Hall Properties of Matter > States of Matter Vapor describes the gaseous state of a substance that is generally a liquid or solid at room temperature, as in water vapor. 2.1

17 © Copyright Pearson Prentice Hall Properties of Matter > Slide 17 of 26 Physical Changes How can physical changes be classified? 2.1

18 Slide 18 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Physical Changes During a physical change, some properties of a material change, but the composition of the material does not change. As gallium melts in a persons hand, the shape of the sample changes, but the composition of the material does not change. 2.1

19 Slide 19 of 26 © Copyright Pearson Prentice Hall Properties of Matter > Physical Changes Physical changes can be classified as reversible or irreversible. All physical changes that involve a change from one state to another are reversible (evaporation, condensation, etc...) Cutting hair, filing nails, and cracking an egg are examples of irreversible physical changes. 2.1

20 © Copyright Pearson Prentice Hall Slide 20 of 26 Section Quiz -or- Continue to: Launch: Assess students understanding of the concepts in Section 2.1 Section Quiz. 2.1.

21 © Copyright Pearson Prentice Hall Slide 21 of 26 1.Which of the following would be described as an extensive property of matter? a.temperature b.color c.mass d.hardness 2.1 Section Quiz.

22 © Copyright Pearson Prentice Hall Slide 22 of Section Quiz. 2.Which properties can be observed without changing the composition of a substance? a.all properties of a substance b.intensive properties c.chemical properties d.physical properties

23 © Copyright Pearson Prentice Hall Slide 23 of Section Quiz. 3.Match the states of matter with the following descriptions: (1) takes the volume and shape of its container (2) has a definite shape and volume (3) has a definite volume but an indefinite shape a.(1) liquid, (2) solid and (3) gas b.(1) gas, (2) solid, and (3) liquid c.(1) gas, (2) liquid, and (3) solid

24 END OF SHOW


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