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

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

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

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

(8th) Chapter 6-1 Cornell Notes 511 × 511 - en.wikipedia.org Paragraph 1 matter: anything taking up space/has mass; chemistry: study of matter & it’s changes; 2 types of properties: chemical & physical.

(8th) Chapter 6-1 Cornell Notes 511 × 511 - en.wikipedia.org Paragraph 2 physical property: observed w/out changing into another substance; examples: melting T, color, hardness, texture, shine, flexibility.

(8th) Chapter 6-1 Cornell Notes 511 × 511 - en.wikipedia.org Paragraph 3 chemical property: substance’s ability to change into other substances; to observe this property involves the actual change.

(8th) Chapter 6-1 Cornell Notes 511 × 511 - en.wikipedia.org physical change: alters the form/appearance but remains same substance, chemical properties unchanged; Paragraph 4 examples: bending, cutting.

(8th) Chapter 6-1 Cornell Notes 511 × 511 - en.wikipedia.org Paragraph 5 chemical change: chemical reaction producing new substance(s); chemical change involves breaking/forming bonds to form new substance(s).

(8th) Chapter 6-1 Cornell Notes 511 × 511 - en.wikipedia.org 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.

(8th) Chapter 6-1 Cornell Notes 511 × 511 - en.wikipedia.org Paragraph 7 change in matter involves release or absorption of energy (example temperature); endothermic reaction: E is absorbed; exothermic reaction: E is released.