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Published byEthelbert Terry Modified over 9 years ago
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Today’s Agenda… Flashback Discuss Physical Changes at Home
Notes on Chemical Properties and Changes Venn diagram to compare physical and chemical changes Letter to a friend
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Chemical Properties and Changes Study Pack #7
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Today’s Goals… I can describe a substance using its chemical properties I can describe a chemical change I can compare physical and chemical changes
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Chemical Properties Can only be observed while the object is changing into a NEW substance
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Examples: Flammability (ability to burn) Ability to rust
Ability to tarnish
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Chemical Changes Result in a NEW substance Not easily reversed
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Examples: Wood burning Iron rusting Silver tarnishing Cooking/Baking
Foods spoiling Leaves changing colors in the fall
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Signs of Change How do you know a change has occurred? Gas bubbles
Production of heat, light, smoke Change in color Sound
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Assignment Write a letter to a friend describing the difference between a physical and chemical change! Don’t forget to give an example of each.
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