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

(8th) Chapter 6-1 Cornell Notes Key Questions 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 Paragraph 1 matter: anything taking up space/has mass; chemistry: study of matter & it’s changes; 2 types of properties: chemical & physical × en.wikipedia.org511 × en.wikipedia.org

(8th) Chapter 6-1 Cornell Notes Paragraph 2 physical property: observed w/out changing into another substance; examples: melting T, color, hardness, texture, shine, flexibility × en.wikipedia.org511 × en.wikipedia.org

(8th) Chapter 6-1 Cornell Notes Paragraph 3 chemical property: substance’s ability to change into other substances; to observe this property involves the actual change × en.wikipedia.org511 × en.wikipedia.org

(8th) Chapter 6-1 Cornell Notes Paragraph 4 physical change: alters the form/appearance but remains same substance, chemical properties unchanged; examples: bending, cutting × en.wikipedia.org511 × en.wikipedia.org

(8th) Chapter 6-1 Cornell Notes Paragraph 5 chemical change: chemical reaction producing new substance(s); chemical change involves breaking/forming bonds to form new substance(s) × en.wikipedia.org511 × en.wikipedia.org

(8th) Chapter 6-1 Cornell Notes 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 × en.wikipedia.org511 × en.wikipedia.org

(8th) Chapter 6-1 Cornell Notes Paragraph 7 change in matter involves release or absorption of energy (example temperature); endothermic reaction: E is absorbed; exothermic reaction: E is released × en.wikipedia.org511 × en.wikipedia.org