Let’s Get Real

1. Let’s Get Real 1. What is an acid? What are the common properties? 2. What is a base? What are the common properties? 3. List 4 strong acids. End

2. Tying it all together Previous Exit Slip Problems: • What are two properties of an acid? 2. What is an Arrhenius acid? 3. What makes something a strong or weak base?

3. What do all of these athletes have in common?

4. Gilbert Lewis

5. Today’s Learning Target • 6.7 – I can discuss the differences between Arrhenius, Bronsted-Lowry, and Lewis acids/bases. I can identify a compound as being one or more of the following.

6. Today’s Focus Question • Why did acids and bases cause Gilbert Lewis to kill himself?

7. Acid/Base Reading • Popcorn read the reading you picked up. • Read it aloud and answer the questions once you are done.

8. recall • What is an Arrhenius acid? • What is an Arrhenius base? • What is a Bronsted-Lowry acid? • What is a Bronsted-Lowry base?

9. Arrhenius Acids/Bases • An Arrhenius acid gives a H+ to a solution in an acid/base reaction • An Arrhenius acid will have a Hin its chemical compound (e.g. HCl, HNO3, H2SO4, etc.) • An Arrhenius base gives an OH-to a solution in an acid/base reaction • An Arrhenius base will have an OH in its chemical compound (e.g. NaOH, KOH, Ca(OH)2, etc.).

10. Bronsted-Lowry Acids/Bases • Refined Arrhenius’ theory of acids/bases • Bronsted-Lowry Acid – Donate (give) a H+ to solution • Bronsted-Lowry Acid – Accept (take) a H+ from solution. • All Arrhenius acids/bases are Bronsted-Lowry acids/bases, but not all Bronsted-Lowry acids/bases are Arrhenius acids/bases.

11. Table Talk • Label the acid and base in this reaction, determine whether it is Arrhenius, Bronsted-Lowry, or both HCl + H2O  H3O+ + Cl-

12. Lewis Acids and Bases • To be an acid/base, a molecule does not necessarily have to contain H+. • Lewis acid – An atom, ion, or molecule that accepts an electron pair to form a covalent bond. • Lewis base – An atom, ion, or molecule that donates an electron pair to form a covalent bond. • Therefore, acid/base reactions are ultimately about the transfer of electrons.

13. Class Example • Label the Lewis acid and the Lewis base in the following reaction: BF3 + F- BF4-

14. Class Example • Label the Lewis acid and base in the following reaction. Could it also be Arrhenius and/or Bronsted-Lowry? H+ + NH3 NH4+

15. Table Talk • Label the Lewis acid and the Lewis base in the following reaction: BF3 + NH3 BF3NH3

16. Stop and Jot • Label each reactant as either a Lewis acid or a Lewis base. AlCl3 + F- AlCl4-

17. Summarize

18. Relay Races • Competing with your table • Answer the questions one at a time. EVERYONE MUST ANSWER QUESTIONS WHEN IT IS THERE TURN. • Next group member should check previous answer before moving on.

19. Relay Race Questions For 1-4, label the acid and base in each of the reactions and say whether it is Arrhenius, Bronsted-Lowry, and/or Lewis. It can be a combination of all of these. • H2CO3 + H2O  HCO3-+ H3O+ • HF + H2O  F- + H3O+ • BF3 + F-  BF4- • HCl + NH3  NH4+ + Cl- • List all of the strong bases • List all of the strong acids

20. Today’s Learning Target • 6.7 – I can discuss the differences between Arrhenius, Bronsted-Lowry, and Lewis acids/bases. I can identify a compound as being one or more of the following.

21. Work Time • Begin working on your homework • There will be an exit slip after this

22. Learning Log Assessment Rate yourself 1 – 4 on LT 6.7

23. Exit Slip • For the following reactions, identify the reactants as Arrhenius acids/bases, Bronsted-Lowry acids/bases, and/or Lewis acids/bases: • NaOH + HCl  H2O + + NaCl • BF3 + F- BF4-

24. Learning Log Assessment Using your exit slip score, re-rate yourself on LT 6.7

25. Closing Time • Exam next Thursday/Friday • 1st character evaluation and awards next Thursday/Friday • 1st binder check next Thursday/Friday