Classifying Equations The Five Types of Chemical Equations Chapter 11.2
Objectives <ul><li>Describe the five types of chemical equations. </li></ul><ul><li>Predict the products of the five types...
Vocabulary <ul><li>combination reaction  ( = synthesis reaction): a chemical change in which two or more substances react ...
Vocabulary Continued <ul><li>activity series : a list of elements in order of decreasing activity (found on p. 7 of your c...
Preview of the Five Reaction Types <ul><li>using the terminology of your Chemistry Reference Tables/EOC (it may not match ...
Synthesis <ul><li>Two or more  substances come together to form  one  new substance. </li></ul><ul><li>Example: </li></ul>...
Synthesis Try It <ul><li>Be + O 2  ---> </li></ul><ul><li>Be 2+  + O 2-  = </li></ul><ul><li>Be 2 O 2  = </li></ul><ul><li...
Synthesis Try It 2 <ul><li>Write the synthesis reaction that forms the compound: Magnesium nitride (Mg 3 N 2 ) from solids...
Synthesis Try It 2 <ul><li>Balance: 3Mg + N 2  ---> Mg 3 N 2 </li></ul>
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Types of Reactions: Synthesis

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  • Types of Reactions: Synthesis

    1. 1. Classifying Equations The Five Types of Chemical Equations Chapter 11.2
    2. 2. Objectives <ul><li>Describe the five types of chemical equations. </li></ul><ul><li>Predict the products of the five types of chemical equations. </li></ul>
    3. 3. Vocabulary <ul><li>combination reaction ( = synthesis reaction): a chemical change in which two or more substances react to form a single new substance </li></ul><ul><li>decomposition reaction : a chemical change in which a single compound is broken down into two or more simpler products </li></ul><ul><li>single replacement reaction : a chemical change in which one element replaces a second element in a compound; also called displacement reaction </li></ul>
    4. 4. Vocabulary Continued <ul><li>activity series : a list of elements in order of decreasing activity (found on p. 7 of your chemistry reference tables) </li></ul><ul><li>double replacement reaction : a chemical change that involves an exchange of positive ions between two compounds </li></ul><ul><li>combustion reaction : a chemical change in which an element or compound reacts with oxygen, often producing energy in the form of heat and light </li></ul>
    5. 5. Preview of the Five Reaction Types <ul><li>using the terminology of your Chemistry Reference Tables/EOC (it may not match with the book) </li></ul><ul><li>1) Synthesis </li></ul><ul><li>2) Decomposition </li></ul><ul><li>3) Single Replacement </li></ul><ul><li>4) Double Replacement </li></ul><ul><li>5) Combustion </li></ul><ul><li>Found on p. 6 of your Chemistry Reference Tables </li></ul>
    6. 6. Synthesis <ul><li>Two or more substances come together to form one new substance. </li></ul><ul><li>Example: </li></ul><ul><li>2 Mg (s) + O 2 (g) ---> 2 MgO (s) </li></ul><ul><li>IDENTITY BADGE : Only one substance is produced in the end. </li></ul><ul><li>Try it: Complete and balance this synthesis reaction -- Be + O 2 ---> </li></ul>
    7. 7. Synthesis Try It <ul><li>Be + O 2 ---> </li></ul><ul><li>Be 2+ + O 2- = </li></ul><ul><li>Be 2 O 2 = </li></ul><ul><li>BeO </li></ul><ul><li>? Be + ? O 2 ---> ? BeO </li></ul><ul><li>Balanced: 2 Be + O 2 ---> 2 BeO </li></ul>
    8. 8. Synthesis Try It 2 <ul><li>Write the synthesis reaction that forms the compound: Magnesium nitride (Mg 3 N 2 ) from solids of its elements. </li></ul><ul><li>Mg 3 = Mg; N 2 = N </li></ul><ul><li>Uncross subscripts: Mg 2+ + N 3- </li></ul><ul><li>Write equation: Mg (s) + N 2 (g) ---> Mg 3 N 2 </li></ul><ul><li>(N = diatomic molecule) </li></ul>
    9. 9. Synthesis Try It 2 <ul><li>Balance: 3Mg + N 2 ---> Mg 3 N 2 </li></ul>

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