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.

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