chemical reactions cornell notes page 127. chemical properties characteristics of a material that...
TRANSCRIPT
![Page 1: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/1.jpg)
Chemical ReactionsChemical Reactions
Cornell Notes page 127Cornell Notes page 127
![Page 2: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/2.jpg)
Chemical Chemical PropertiePropertiess
Characteristics of a Characteristics of a material that can material that can only be determined only be determined during a Chemical during a Chemical ReactionReaction– ReactivityReactivity– Flammability Flammability – pHpH– OxidationOxidation
![Page 3: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/3.jpg)
Chemical Chemical ReactionReaction
ReactantsReactants
ProductsProducts
The process of The process of substances substances changing into new changing into new substances.substances.
Substances at start Substances at start of reaction that are of reaction that are changedchanged
New substances New substances made from the made from the reaction (end reaction (end results).results).
![Page 4: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/4.jpg)
The Law of The Law of ConservatioConservation of Mattern of Matter
Matter is not Matter is not created or created or destroyed.destroyed.
mass of mass of reactants reactants should equal should equal mass of mass of products!products!
![Page 5: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/5.jpg)
4 Signs of 4 Signs of a a Chemical Chemical ReactionReaction
Used to identify Used to identify when a reaction has when a reaction has occurredoccurred
Not definite- more Not definite- more signs increase signs increase confidence that a confidence that a reaction has reaction has occurred.occurred.
Best indicator is Best indicator is that substances that substances have new have new properties.properties.
![Page 6: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/6.jpg)
4 Signs of 4 Signs of a a Chemical Chemical ReactionReaction
1. Formation of a Gas1. Formation of a Gas BubblesBubbles Least reliable signLeast reliable sign
Ex.) baking soda and Ex.) baking soda and vinegar; yeast and vinegar; yeast and hydrogen peroxide.hydrogen peroxide.
![Page 7: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/7.jpg)
4 Signs of 4 Signs of a a Chemical Chemical ReactionReaction
2. Formation of a 2. Formation of a PrecipitatePrecipitate Solid is created Solid is created
when two liquids when two liquids are mixedare mixed
May look like small May look like small particles suspended particles suspended in a liquid.in a liquid.
![Page 8: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/8.jpg)
4 Signs of 4 Signs of a a Chemical Chemical ReactionReaction
3. Unexpected Color 3. Unexpected Color ChangeChange When two When two
substances are substances are mixed and an mixed and an unexpected color unexpected color occurs.occurs.
Ex.) Bleach spilt on Ex.) Bleach spilt on colored clothes. colored clothes.
![Page 9: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/9.jpg)
4 Signs of 4 Signs of a a Chemical Chemical ReactionReaction
4. Temperature 4. Temperature ChangeChange temperature temperature
changes as energy changes as energy is used or released is used or released from the reaction.from the reaction.
ExothermicExothermic- heat is - heat is released (gets released (gets warmer)warmer)
EndothermicEndothermic- heat - heat is absorbed (gets is absorbed (gets colder)colder)
![Page 10: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/10.jpg)
What is a What is a Catalyst?Catalyst?
A substance that A substance that starts or speeds up starts or speeds up a chemical reaction a chemical reaction that is not used or that is not used or changed in the changed in the reaction.reaction.
lowers the amount lowers the amount of energy needed in of energy needed in a chemical reactiona chemical reaction
![Page 11: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/11.jpg)
Oxidation Reactions
Page 127
![Page 12: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/12.jpg)
Oxidation Reactions
• Specific type of Chemical Reaction in which a substance reacts with oxygen
• Often results in a color change– Apples turn brown
– Many metals oxidize, such as iron turning red or copper turning green; we often call this rust.
![Page 13: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/13.jpg)
• Oxygen reacts with iron to create rust.
• The new color is evidence that a chemical reaction has taken place.
![Page 14: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/14.jpg)
• Oxygen reacts with apples to cause them to brown
• Adding citric acid prevents the oxidation reaction.
![Page 15: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/15.jpg)
• Oxygen reacts with copper to create a green color called verdigris
• Many oxidation reactions take time to happen.
![Page 16: Chemical Reactions Cornell Notes page 127. Chemical Properties Characteristics of a material that can only be determined during a Chemical Reaction Characteristics](https://reader035.vdocuments.site/reader035/viewer/2022070402/56649f255503460f94c3bdd7/html5/thumbnails/16.jpg)
• Burning is an example of a rapid oxidation reaction.
• Oxygen is required for burning, the heat and light are evidence that a reaction is taking place.