1 / 12

DO NOW

Objective: classify chemical reactions as synthesis, decomposition, single-replacement, double-replacement, or combustion reactions. Key Terms Synthesis reaction single-replacement reaction Double-replacement reaction combustion reaction Oxidation-reduction reaction . DO NOW .

bruis
Download Presentation

DO NOW

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. Objective: classify chemical reactions as synthesis, decomposition, single-replacement, double-replacement, or combustion reactions. Key Terms Synthesis reaction single-replacement reaction Double-replacement reaction combustion reaction Oxidation-reduction reaction DO NOW WHAT TWO SIDES ARE IN A CHEMICAL REACTION?

  2. Classifying Reactions • Some general types of chemical reactions are synthesis reactions, decomposition reactions, single-replacement reactions, double-replacement reactions and combustion reactions. • Each type describes a different way in which reactants interact to form products.

  3. Synthesis Reaction • Reaction in which two or more substances react to form a single substance. • The product synthesized is always a compound. • The general equation for a synthesis reaction is A+B AB

  4. Decomposition Reaction • This is the opposite of synthesis • A compound breaks down into two or more simpler substances • The products may be elements or compounds • The general equation is AB A+B • Is used in cars to make the airbags deploy

  5. Single-Replacement Reaction • One element takes the place of another element in a compound. • The general form is A+BC B+AC

  6. Double-Replacement Reaction • One in which two different compounds exchange positive ions and form two new compounds. • The general form is AB+CD AD+CB

  7. Combustion Reaction • A substance reacts rapidly with oxygen, often producing heat and light. • The classifications for reactions sometimes overlap; the combustion of hydrogen forms water. • This reaction can also be classified as a synthesis reaction

  8. DO NOW • Take out your homework

  9. Reactions as Electrons Transfer • The discovery of subatomic particles enabled scientists to classify certain chemical reactions as transfers of electrons between atoms, • A reaction in which electrons are transferred from one reactant to another is called an oxidation-reduction reaction, or redox reaction.

  10. Oxidation • Any process in which an element loses electrons during a chemical reaction is called oxidation. • A reactant is oxidized if it loses electrons

  11. Reduction • The process in which an element gains electrons during a chemical reaction is called reduction. • A reactant is said to be reduced if it gains electrons.

  12. Recap • What are the classifications of chemical reactions? • Homework: pg 205 1-8

More Related