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Matter has observable properties.

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Presentation on theme: "Matter has observable properties."— Presentation transcript:

1 Matter has observable properties.
Section 2.1 Outline Matter has observable properties.

2 Physical properties describe a substance.
Physical property- characteristic of a substance that can be observed without changing the identity of the substance color shape size d) texture e) volume f) mass

3 A. Physical Properties observing physical properties includes the use of all your senses measuring can be used to determine physical properties

4 A. Physical Properties (cont.)
examples that a physical property does not change a substance stretching a rubber band bending & reshaping clay

5 B. Density measures the amount of matter in a given volume usually labeled g/cm3 D = mass ÷ volume (m/v)

6 B. Density (cont.) Determine the density of a box with a mass of 480 grams and a volume of 60 cm3

7 C. Physical Changes Physical change – a change in any physical property; not the substance itself

8 C. Physical Changes (cont.)
Examples: melting ice cutting paper in half changing wool into a sweater

9 A. Chemical Properties & Changes
Chemical property – describes how substances can form new substances

10 A. Chemical props. & changes (cont.)
Examples Combustibility tells how well something can burn Ability to rust

11 A. Chemical props. & changes (cont.)
Chemical change – one substance changes into another Combination of atoms are rearranged to make new substances

12 A. Chemical props. & changes (cont.)
examples Piece of wood burning Rusting iron Boiling an egg

13 B. Signs of a Chemical Change
If two or more signs are observed, it is most likely a chemical change Production of an odor Change in temperature Change in color Formation of bubbles Formation of a solid

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