1 / 17

(2.3) TYPES OF CHEMICAL REACTIONS

(2.3) TYPES OF CHEMICAL REACTIONS. (p144-147). Chemical Reaction. Reactants - the starting materials in a reaction. Products - the new materials formed in a reaction. Chemical Equation. Describes a chemical reaction reactants  products Note:

hagen
Download Presentation

(2.3) TYPES OF 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. (2.3) TYPES OF CHEMICAL REACTIONS (p144-147)

  2. Chemical Reaction • Reactants - the starting materials in a reaction. • Products - the new materials formed in a reaction.

  3. Chemical Equation Describes a chemical reaction reactants  products Note: The symbol () can be read as yields or forms or produces

  4. Chemical Reactions – 4 Types • 4 main types of chemical reactions • Synthesis • Decomposition • Single displacement • Double displacement

  5. 1. Synthesis Reactions • Two or more reactants combine to form a new product. • GENERAL CHEMICAL EQUATION (GCE)

  6. Synthesis Reactions-Examples • sodium + oxygen  sodium oxide • 2 H2+ O2  2 H2O

  7. 2. Decomposition Reactions • A compound is broken down into elements or smaller compounds. • GENERAL CHEMICAL EQUATION (GCE)

  8. Decomposition Reactions-Examples • sodium oxide  sodium + oxygen • 2 H2O  2 H2 + O2

  9. 3. Single Displacement Reactions • One element replaces another element to form a new compound. • GENERAL CHEMICAL EQUATION (GCE) Or

  10. Single Displacement- Examples • calcium + hydrogen bromide  calcium bromide + hydrogen • Br2 + 2 KI +  2 KBr + I2

  11. 4. Double Displacement Reactions • In a double displacement reaction the metal ions in two compounds switch places…”partner swap” • GENERAL CHEMICAL EQUATION (GCE)

  12. Double Displacement- Examples • barium sulfide + potassium iodide  barium iodide + potassium sulfide • AgNO3 + KCl  AgCl + KNO3

  13. Chemical Reactions – 5th Type • Another reaction type is Combustion (also called burning) • The burning of fossil fuels always needs oxygen and will yield predictable products. • Complete combustion: lots of O2 Fuel + oxygen  carbon dioxide + water (in general) CxHy + O2  CO2 + H2O CH4 + 2 O2  CO2 + 2 H2O

  14. 5. Combustion Reactions • The burning of fossil fuels always requires oxygen and will yield predictable products. • Complete combustion: lots of O2 Fuel + oxygen  carbon dioxide + water CxHy + O2  CO2 + H2O CH4 + 2 O2  CO2 + 2 H2O

  15. Combustion Continued • Incomplete combustion: occurs when there is not enough O2 • The products are different than with complete combustion. CxHy + O2 C + CO + CO2 + H2O

  16. CLASSWORK • “The Four Main Types of Chemical Reactions” handout

More Related