Find assigned seat Get out your journal Have writing utensil ready Bell ringer Find assigned seat Get out your journal Have writing utensil ready November 3/4

Announcements Random journal check THIS WEEK Ms. King will count up your stamps for a grade If you have no journal, you will receive a 0 for the first journal check NON-NEGOTIABLE Grace Period at the End of class Complete any make-up work Set up your journal (if you’ve been absent) Glue/staple/attach any work Ms.King will stamp completed pages

Lets go over independent practice from last class On Page 4 Correct any incorrect answers

QUIZ – NO TALKING! SUCCESS! C – NONE H – use your notes A – acids/bases quiz M – none; raise your hand to get up P – everyone! SUCCESS!

Acid/base lab We will do Pre-Lab as a class Complete on page ____ in journal. Add assignment to your table of contents. Acid/base lab We will do Pre-Lab as a class Students with Lab Safety will perform lab Students without will watch demonstration

pH Paper Tells us the specific pH of a solution by changing colors. PRE LAB pH Paper Tells us the specific pH of a solution by changing colors. What colors represent acidic solutions? What colors represent basic solutions?

10 MINUTES COLOR pH Draw the pH color chart (above) in your journal. Add respective color shading to each pH. Use chart on the right as reference. COLOR pH Red 2 Orange/Red 3 Orange 4 Light Orange 5 Yellow 6 Green 7 Dark Green/Blue 8 Dark Blue 9 Light Purple 10 Dark Purple 11 10 MINUTES

PRE LAB Red litmus paper = turns blue when there is a base Blue litmus paper = turns red when there is an acid

**If you are horsing around, you’re out!** Rules DO NOT DRINK OR CONSUME ANYTHING! BE CAREFUL, DO NOT MAKE A MESS! Must wear goggles! Keep them on up on until we’re done. DO NOT SMELL DIRECTLY, whiff only **If you are horsing around, you’re out!**

PROCEDURE – 10 mins Problem: Materials: Procedure What is the pH of 10 unknown substances? Materials: *red litmus paper *blue litmus paper *pH paper *goggles Procedure Dip pH paper in unknown solution #1, rest on paper Dip blue litmus paper in unknown solution #1; rest on paper Dip red litmus paper in unknown solution #1; rest on paper Record your results in the Data Chart *

DATA CHART Solution # / Name Litmus Paper Changed pH paper color What is its pH? Acid or Base? 1   2 3 4 5 6 7 8 9 10

PRE LAB QUESTIONS