1 / 11

6.1-6.2 Reaction Types

6.1-6.2 Reaction Types. Synthesis, Decomposition and Combustion. Types of Chemical Reactions. There are 6 ways elements and compounds may interact You can predict the products of a reaction if you can identify the reactants you are using

flower
Download Presentation

6.1-6.2 Reaction Types

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. 6.1-6.2 Reaction Types Synthesis, Decomposition and Combustion

  2. Types of Chemical Reactions • There are 6 ways elements and compounds may interact • You can predict the products of a reaction if you can identify the reactants you are using • General chemical equations (GCE) use letters in the place of the symbols of elements. They help you identify the reaction type

  3. Symbols in GCE • A single letter is a metal or non-metal Ex. A, B, X • H is for the hydrogen in an acid • OH is for hydroxide in a base • Two letters Ex. AB, CD represent a compound Example: GCE: HB + XOH  XB + H2O Word equation: sulfuric acid + sodium hydroxide  sodium sulfate + water Skeleton equation: H2SO4 (aq) + NaOH (s)  Na2SO4 (aq) + H2O (l) Balanced Equation:H2SO4 (aq) + 2 NaOH (s)  Na2SO4 (aq) + 2 H2O (l)

  4. 1. Synthesis Reactions Element + Element  Compound In general A + B AB Example: Mg (s) + O2 (g)  MgO (s) S8 (g) + O2(g)  SO2 (g) H2 (g) + N2 (g)  2NH3 (g)

  5. 2. Decomposition Reactions • A compound is broken down into two or more elements or simpler compounds Compound  Element + Element In general, AB A + B Example: 2 HgO (s)  2 Hg (l) + O2(g) 2 H2O (l)  2 H2 (g) + O2 (g)

  6. 3.Combustion Reactions • A compound or element rapidly reacts with oxygen gas • Heat and light are given off • Usually involve a hydrocarbon (a compound made up of only hydrogen and carbon) • The formula for a hydrocarbon is general CxHy (x and y are subscript numbers) Ex. CH4 is methane

  7. Combustion A. Complete combustion -plenty of oxygen is available In general, CxHy (g)+ O2 (g) CO2 (g) + H2O (l) • Incomplete combustion -Oxygen is in limited supply In general, CxHy (g)+ O2 (g) C(s) + CO (g) + CO2 (g) + H2O (l)

  8. Impact on the Environment • Global warming – the combustion of hydrocarbons releases carbon dioxide, a greenhouse gas • Cleaning oil spills – on land, the oil can be set on fire (combustion) then the contaminated soil is removed for additional treatment

  9. Determine the reaction type 2 Na + Cl2 2 NaCl Type: CH4 + 2 O2  CO2 + 2 H2O Type: 2NI3 N2 + 3 I2 Type:

  10. Predict the Products • NH3 Type:_______ • Na + Cl2 Type:_______ • S8 + O2  Type:_______ • CH4 + O2  Type:_______ • C2H6 + O2 Type:_______ plenty deficient

  11. Homework p. 229 #4-10

More Related