1. (8th) Chapter 6-1 Cornell Notes
“Observing Chemical Change”

2. (8th) Chapter 6-1 Cornell Notes
Key Questions
(8th) Chapter Cornell Notes
How can changes in matter be described?
How can you tell when a chemical reaction occurs?

3. (8th) Chapter 6-1 Cornell Notes
Key Terms
matter-
chemistry-
physical property-
chemical property-
physical change-
chemical change-

4. (8th) Chapter 6-1 Cornell Notes
Key Terms
reactant-
product-
precipitate-
endothermic reaction-
exothermic reaction-

5. (8th) Chapter 6-1 Cornell Notes
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Paragraph 1
matter: anything taking up space/has mass;
chemistry: study of matter & it’s changes;
2 types of properties: chemical & physical.

6. (8th) Chapter 6-1 Cornell Notes
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Paragraph 2
physical property: observed w/out changing into another substance;
examples: melting T, color, hardness, texture, shine, flexibility.

7. (8th) Chapter 6-1 Cornell Notes
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Paragraph 3
chemical property: substance’s ability to change into other substances;
to observe this property involves the actual change.

8. (8th) Chapter 6-1 Cornell Notes
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physical change: alters the form/appearance but remains same substance, chemical properties unchanged;
Paragraph 4
examples: bending, cutting.

9. (8th) Chapter 6-1 Cornell Notes
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Paragraph 5
chemical change: chemical reaction producing new substance(s);
chemical change involves breaking/forming bonds to form new substance(s).

10. (8th) Chapter 6-1 Cornell Notes
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Paragraph 6
chemical reactions: changes in properties, changes in energy that’s observed;
example of chemical changes: color change, formation of a solid (aka precipitate), formation of a gas.

11. (8th) Chapter 6-1 Cornell Notes
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Paragraph 7
change in matter involves release or absorption of energy (example temperature);
endothermic reaction: E is absorbed;
exothermic reaction: E is released.