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Introduction to Chemical Equations

Introduction to Chemical Equations. Objective: Today I will be able to: Interpret the meaning of symbols used to write equations. Apply the correct naming and formula writing rules to ionic and covalent compounds to solve a puzzle. Evaluation/Assessment:

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Introduction to Chemical Equations

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  1. Introduction to Chemical Equations

  2. Objective: • Today I will be able to: • Interpret the meaning of symbols used to write equations. • Apply the correct naming and formula writing rules to ionic and covalent compounds to solve a puzzle. • Evaluation/Assessment: • Informal assessment: Students responses to questions during the notes. Listening to group interactions as students complete the naming and formula writing puzzle. • Formal Assessment: Analyzing student responses to the exit ticket and the puzzle. • Common Core Connection • Build Strong Content Knowledge • Reason abstractly and quantitatively • Look for and make use of structure

  3. Lesson Sequence • Evaluate: Warm – Up • Explain: Review Course Policies • Evaluate: Symbols in Equations Questions • Explain: Symbols in Equations Notes • Evaluate: Naming and formulas puzzle • Evaluate: Exit Ticket

  4. Warm - Up • What 2 type of elements are bonded together in an ionic compound? • What 2 types of elements are bonded together in a covalent compound? • Name the following: • SiO2 • Al2O3

  5. Objective • Today I will be able to: • Interpret the meaning of symbols used to write equations. • Apply the correct naming and formula writing rules to ionic and covalent compounds to solve a puzzle.

  6. Homework • Finish Formula Writing Puzzle

  7. Agenda • New Seats • Warm – Up • Review Class Policies

  8. Reminders  • When you come into class, you are expected to be completing the warm up before the bell rings • If I see a cell phone out in class at all, it is an automatic referral • At the end of class stay in your seat until the bell rings

  9. Redo Policy • Redo’s are permitted on exams • If you chose to redo an exam you must complete the redo within one week from the date the exam grade was posted • In order to have a redo • You must stay after one day to do complete test corrections. You will not receive credit for the corrections. • The redo exam will be given once the test corrections are complete • The grade on the redo exam will be averaged with the grade on the original exam

  10. Symbols in Chemical Equations

  11. Review

  12. How many elements are in the compound Cu(OH)2?

  13. 3

  14. How can we tell apart different elements?

  15. Each new element begins with a capital letter

  16. What does the number 4 in NH4 represent?

  17. It tells us that there are four hydrogen atoms This is called a subscript

  18. How many atoms are in the compound Mg(C2H3O2)2?

  19. 15

  20. New Symbols

  21. Coefficient • Determines the quantity of each compound present in a reaction • Written in front of the compound • Example:

  22. How is a coefficient different from a subscript?

  23. A coefficient tells us how many of each compound are present in a reaction while a subscript tells us how many of each atom there are.

  24. What is the coefficient in 4H2?

  25. 4

  26. What is the subscript in 2NH3?

  27. Other symbols in equations

  28. Δ

  29. What is written on the left side of the equation?

  30. Reactants H2 + O2 H2O

  31. What is written on the right side of the reaction?

  32. Products H2 + O2 H2O

  33. Determine the reactants and the products in the following equation + +

  34. Review: Naming and Writing Formulas Puzzle Cut out the pieces. Match the formula to the name. Glue it down in the shape. Decorate with colors. Turn it in to Ms. Ose.

  35. Exit Ticket • For the equation listed below: 2 NaNO3 2 NaNO2 + O2 • Circle all of the subscripts • Put a box around all the coefficients

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