Behavior Log is filled out for 9/26/16 Copied Objective, HW into assignment list Chemistry Homework/Demo. Class Permission slip is out if you have them! WARM-UP: How could scientists label solutions and other substances as an acid or a base right away: What do you think they would look for? What test do you think they could do? What are some characteristics of acids and bases?

Mantra - Your Turn! Today is a great day for science because: Science is power. We are powerful because: We always make a difference.

Connections Friday Research a famous Chemist or element

Science Fair Awards! And congratulations to Terrence H for putting together such a personal, creative, and interactive project/ display! For all he considered and learned, he is walking away with a $20 gift card!

Goals * State the Objective(s)/Standard (s)- RI 7.2; W2; Sci 1a/2a * State the Purpose (Big Idea) - Students can identify and explain how elements are organized on the periodic table to understand how they behave in reactions SWBAT compare and contrast the qualities, behaviors, and examples of acids and bases

Agenda I Do: Definitions We Do: Frayer Models: Acid You Do: Check for Understanding You Do: Frayer Models: Base Summary/ Feedback/ Questions

Acid / Base: When an acid and base react with each other.

Acids and Bases

When we think of acids and bases, we tend to think of chemistry lab acids and bases like But we are surrounded by acids and bases in the world. Most of them are weak.

acids form hydrogen ions (H+) in water

form hydrogen ions (H+) in water acids

Acids cause… Lemons to be sour

form hydrogen ions (H+) in water acids sour

corrosive Eat away at other materials

form hydrogen ions (H+) in water acids corrosive sour

Acids cause… Cavities in your teeth

acids Taste sour React w/ metals & carbonates-produce H gas

acids React w/ metals & carbonates-produce H gas form hydrogen ions (H+) in water acids corrosive sour

acids Turn blue litmus paper red

acids React w/ metals & carbonates-produce H gas form hydrogen ions (H+) in water Turn blue litmus paper red acids corrosive sour

acids React w/ metals & carbonates-produce H gas form hydrogen ions (H+) in water Turn blue litmus paper red acids corrosive sour Tomatoes, Lemons, Oranges (Vitamin C) Folic Acid in Vegetables Brick Cleaners Fertilizers

bases form hydroxide ions in water

hydroxide ion made of oxygen & hydrogen OH-

Taste bitter Feel slippery Don’t react w/ carbonates bases

Bases turn red litmus paper blue.

strengths of acids & bases refers to how well an acid or base separates into ions in water

pH scale ranges from 0 – 14 pH < 7 acid pH = 7 neutral pH > 7 base pH Scale song

indicator compound that changes color when in contact w/ an acid or base ex. litmus paper

Universal indicator shows how acidic or alkaline a solution is

Phenolphthalein: Liquid Can be put directly into the solution Turns pink with a base Is clear in an acid

neutralization reaction between an acid & base produces water & a salt an ionic compound

Acids and Bases song-Youtube Acids and Base Alien Juice Bar Interactive Activity BBC Activity

Acids & Bases Review acid or base? tastes sour forms hydroxide ions in water pH= 8 reacts with metals to produce H gas feels slippery turns red litmus paper blue

Acids & Bases A reaction between an acid and a base is a __ reaction. The pH of a neutral solution is __. The products formed when a base reacts with an acid are __ and __. The symbol for a hydrogen ion is __ and the symbol for a hydroxide ion is___.

Last Items/ Questions The best ways to tell an acid/base apart are by the pH scale and indicators. An acid is clear in phenolphthalein with pH less than 7. A bade is pink with a pH greater than 7. Need Chemistry help or want to talk about your grades? Office Hours Saturday, 12-1 at McDonald’s DEADLINES COMING UP: 9 weeks test & Redo of performance task next week

GO GO FEEDBACK FRONTIER! Miss K – In my baggie (Comments on my teaching, living up to my goals, and any personal things you need to privately tell me) Your peers – Feedback to 1 or 2 people… What is something you saw him/her do that matched up with our class values? Why was it really great to see this?

This Week… All good things must come to an end And so while we say goodbye to chemistry, Know that it’s role is always to lend Some understanding of how things work around you and me But so too does our next unit, Where physics tells the tale bit by bit Of how things move and share energy - The interactions around you and me