1 / 11

Chapter 2: Chemical Reactions

Chapter 2: Chemical Reactions. I. Section 1: Observing Chemical Change. A. Properties and Changes of Matter 1) Properties of Matter 2) Changes of Matter 3) Bonding and Chemical Change  Chemical changes occur when bonds ___________ and new bonds _________.

naomi
Download Presentation

Chapter 2: Chemical Reactions

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Chapter 2: Chemical Reactions

  2. I. Section 1: Observing Chemical Change A. Properties and Changes of Matter 1) Properties of Matter 2) Changes of Matter 3) Bonding and Chemical Change  Chemical changes occur when bonds ___________ and new bonds _________. B. Evidence for Chemical Reactions 1) Changes in Properties  precipitate 2) Changes in Energy  Endothermic:  Exothermic:

  3. II. Section 2: Describing Chemical Reactions A. What are Chemical Equations? 1) When words are replaced by ___________ and chemical formulas to _____________ a reaction 2) Basic structure: ____________ “yield” ___________ B. Conservation of Mass In a chemical reaction, the total mass of the reactants must equal the total mass of the products. symbols summarize reactants products

  4. C. Balancing Chemical Equations  the same number of each type of atoms on both sides of the equation! Step 1: Write the equation Step 2: Count the atoms Step 3: Use coefficients to balance atoms Step 4: Look back and check D. Classifying Chemical Reactions 1) Synthesis 2) Decomposition 3) Replacement

  5. III. Section 3: Controlling Chemical Reactions A. Energy and Reactions 1) Activation energy EX: “stars” in fireworks 2) Exothermic and endothermic reactions EX: baking soda & vinegar; baking bread (endothermic) EX: fireworks (exothermic)

  6. B. Rates of Chemical Reactions 1) Surface Area 2) Temperature 3) Concentration 4) Catalysts 5) Inhibitors

  7. IV. Section 4: Fire and Fire Safety A. Understanding Fire 1) The Fire Triangle: 2) Controlling Fire

  8. B. Home Fire Safety If you know how to prevent fires in your home and what to do if a fire starts, you are better prepared to take action. 1) Fighting Fires 2) Preventing Trouble

  9. Chapter Review • Test Format • MC and T/F • Diagrams • Burning a Candle • Balancing a Chemical Reaction • Essays (choose one!) 1) Compare a physical change and a chemical change. 2) Describe the difference between a synthesis reaction and a decomposition reaction.

  10. How to Balance a Chemical Equation Step 1: Write the equation. Step 2: Count the atoms – reactants and products. Step 3: Use coefficients to balance the equation. Step 4: Look back and check.

More Related