Notes Science Tennessee SPI Objective: Identify the common outcome of Chemical Change Outcomes Notes Science Tennessee SPI Objective: Identify the common outcome of all chemical changes. Instructions 1) First click on "View" from the top-menu bar. 2) Then click on "Slide Show" from the drop-down menu. 3) Then use the right-arrow button on your keyboard to advance through this presentation. Essential Learning Students will examine chemical change outcomes to determine common results. Essential Question(s) How do I recognize that a chemical change has occurred, and what are the common outcomes of chemical reactions?

Chemical Change Outcomes SPI 0807.9.2 Chemical Change Outcomes Notes Science Chemical Changes Occur when 2 or more substances, due to a chemical reaction, form a compound & change into a new substance. Compounds are formed when you combine 2 or more or more different reactive elements Atomic bonds break apart and new atomic bonds are formed Valence Electrons are transferred or shared (F.Y.I. This is called ionic & covalent bonding) ….so in other words chemical changes, chemical bonding and chemical reactions are all connected Chemical bonding occurs during a chemical reaction resulting in a chemical change

-forms a compound called NaCl (table salt) Just F.Y.I. Chemical Reaction due to Ionic Bonding -bond formed by electron transfer ("stealing") -forms a compound called NaCl (table salt)

-Forms a diatomic molecule called N2 Just F.Y.I Chemical Reaction due to Covalent Bonding -bond formed by sharing of electrons -Forms a diatomic molecule called N2 Notes

Chemical Change Outcomes (chemical reactions = compounds) SPI 0807.9.2 Chemical Change Outcomes Notes Science Compounds Compounds are formed from chemical reactions Memory Trick C = C (chemical reactions = compounds) Example: When two hydrogen atoms react with one oxygen atom you produce (form) the compound called water (H2O). H Oxygen H Oxygen H

Chemical Change Outcomes 5 Key Points About All Chemical Reactions: SPI 0807.9.2 Chemical Change Outcomes Notes Science 5 Key Points About All Chemical Reactions: 1) A new substance is created 2) The properties of the new substance are different from the substances that you started with 3) No atoms are created or destroyed during chemical reactions 4) Atomic bonds are broken and new bonds are formed (at the valence electron level) 5) compounds come from chemical reactions

Chemical Change Outcomes Chemical reactions can H.O.P.E. SPI 0807.9.2 Chemical Change Outcomes Notes Science Memory Trick Chemical reactions can H.O.P.E. Chemical Change Indicators-Memory Trick H.O.P.E. H: Heat-Heat may be given off (it may get hot) O: Odor-There may be a change in odor (how it smells) P: Pop-It may pop or bang (make a loud noise) E: Explode-It may explode (like fire crackers or dynamite)

Chemical Change Outcomes Chemical reactions can 4FPC SPI 0807.9.2 Chemical Change Outcomes Notes Science Memory Trick Chemical reactions can 4FPC Chemical Change Indicators-Memory Trick 4FPC F: Foam-It may foam (like vinegar & baking soda) F: Flash-It may flash (like a grenade or gun powder) F: Fizzle-It may fizzle (make a hissing sound like Alka-Seltzer) F: Flame- It may burn (like burning paper or wood) P: Precipitate-It may form a solid substance (called a precipitate) C: Color- It may change color (red to blue, green to orange, etc.)

Chemical Change Outcomes SPI 0807.9.2 Chemical Change Outcomes Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Chemical Change Outcomes SPI 0807.9.2 Chemical Change Outcomes Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Chemical Change Outcomes SPI 0807.9.2 Chemical Change Outcomes Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Chemical Change Outcomes SPI 0807.9.2 Chemical Change Outcomes Science Questions Sample Question Here is an example of a question you might see on a quiz or test.

Chemical Change Outcomes SPI 0807.9.2 Chemical Change Outcomes Science Questions Sample Question Here is an example of a question you might see on a quiz or test.