let’s get real
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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. Tying it all together. Previous Exit Slip Problems: What are two properties of an acid ? 2. What is an Arrhenius acid ? - PowerPoint PPT PresentationTRANSCRIPT
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.
LET’S GET REAL
End
Previous Exit Slip Problems:1. What are two properties of an acid?
2. What is an Arrhenius acid?
3. What makes something a strong or weak base?
TYING IT ALL TOGETHER
WHAT DO ALL OF THESE ATHLETES HAVE IN COMMON?
GILBERT LEWIS
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.
TODAY’S LEARNING TARGET
Why did acids and bases cause Gilbert Lewis to kill himself?
TODAY’S FOCUS QUESTION
Popcorn read the reading you picked up.Read it aloud and answer the questions
once you are done.
ACID/BASE READING
What is an Arrhenius acid?What is an Arrhenius base?What is a Bronsted-Lowry acid?What is a Bronsted-Lowry base?
RECALL
ARRHENIUS ACIDS/BASES
An Arrhenius acid gives a H+ to a solution in an acid/base reactionAn Arrhenius acid will have a H in its chemical compound (e.g. HCl, HNO3, H2SO4, etc.)
An Arrhenius base gives an OH -
to a solution in an acid/base reactionAn Arrhenius base will have an OH in its chemical compound (e.g. NaOH, KOH, Ca(OH)2, etc.).
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.
Label the acid and base in this reaction, determine whether it is Arrhenius, Bronsted-Lowry, or both
HCl + H2O H3O+ + Cl-
TABLE TALK
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.
LEWIS ACIDS AND BASES
Label the Lewis acid and the Lewis base in the following reaction:
BF3 + F- BF4
-
CLASS EXAMPLE
Label the Lewis acid and base in the following reaction. Could it also be Arrhenius and/or Bronsted-Lowry?
H+ + NH3 NH4+
CLASS EXAMPLE
Label the Lewis acid and the Lewis base in the following reaction:
BF3 + NH3 BF3NH3
TABLE TALK
Label each reactant as either a Lewis acid or a Lewis base.
AlCl3 + F- AlCl4
-
STOP AND JOT
SUMMARIZE
Competing with your tableAnswer 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.
RELAY RACES
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.1. H2CO3 + H2O HCO3
- + H3O+
2. HF + H2O F- + H3O+
3. BF3 + F - BF4-
4. HCl + NH3 NH4+ + Cl -
5. List all of the strong bases6. List all of the strong acids
RELAY RACE QUESTIONS
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.
TODAY’S LEARNING TARGET
Begin working on your homeworkThere will be an exit slip after this
WORK TIME
LEARNING LOG ASSESSMENT
Rate yourself 1 – 4 on LT 6.7
1. For the following reactions, identify the reactants as Arrhenius acids/bases, Bronsted-Lowry acids/bases, and/or Lewis acids/bases:
a. NaOH + HCl H2O + + NaCl
b. BF3 + F- BF4
-
EXIT SLIP
LEARNING LOG ASSESSMENT
Using your exit slip score, re-rate yourself on LT 6.7
Exam next Thursday/Friday1st character evaluation and awards next Thursday/Friday
1st binder check next Thursday/Friday
CLOSING TIME