Do Now - Quick Write (5-10 min) 1.Describe, in a paragraph, what you think of when you hear the term “acid”. 2.Where have you heard this term used before?

 Due: Remediation  Today’s Homework:  USA TestPrep  Textbook 409 & 410 #1-12, 411 #1-6  Announcement:  Happy Thanksgiving! Enjoy your 5 day weekend!

Quiz - Retake 1. A solution is … A.A substance with a solvent and at least one solute. B.A substance with solutes only. C.Universally Water D.A substance that is a heterogeneous mixture. 2. A heterogeneous mixture is … A.A mixture that is dissolved. B.A mixture where the parts are uniform throughout. C.A mixture where the parts can be easily seen. D.A mixture that reacts with water.

3. A colloid is … A.A homogeneous mixture where the parts are uniform throughout. B.A heterogeneous mixture with parts too small to see but can be separated. C.A heterogeneous mixture where parts can be easily seen and separated. D.A homogeneous mixture with parts that can be easily seen and separated. 4. A suspension is… A.A homogeneous mixture where the parts are uniform throughout. B.A heterogeneous mixture with parts too small to see but can be separated. C.A heterogeneous mixture where parts can be easily seen and separated. D.A homogeneous mixture with parts that can be easily seen and separated.

5. A Solvent is … A.A homogeneous mixture where the parts are uniform throughout. B.The part of the solution present in the largest amount. C.Two or more elements combined. D.The part of the solution that is dissolved. 6. A Solute is… A.A homogeneous mixture where the parts are uniform throughout. B.The part of the solution present in the largest amount. C.Two or more elements combined. D.The part of the solution that is dissolved.

7. A compound is … A.Two or more different elements combined. B.The part of the solution present in the largest amount. C.Two or more elements combined. D.The part of the solution that is dissolved. 8. A molecule is… A.Two or more different elements combined. B.The part of the solution present in the largest amount. C.Two or more elements combined. D.The part of the solution that is dissolved.

AB C D E F Identify using the given description. 9. A pure substance - elements 10. Mixture of elements and compounds

Title: Acid and Base Demo L.O. SWBAT determine if a solution is an acid, base, or neutral.

ACIDS Form Hydrogen (H + ) ions in water Taste Sour React with metals.

BASES Forms Hydroxide (OH - ) ions in water Taste Bitter Feels Slippery

Neutral Not an acid or base. Water (H 2 O) H+ ions = OH- ions

Is it an Acid or Base? Forms OH- ions. Feels Slippery. Tastes Sour. Reacts with metals. Tastes Bitter. Forms H+ ions ACID BASE ACID BASE ACID

Indicator A compound that changes color in the presence of an acid or a base.

Natural indicators There are natural indicators for acids and bases, and we may find them in our kitchen or garden! Red rose flowers Bougainvillea flowers Red cabbage Blue berries

ACIDS & INDICATORS Litmus Paper Blue  Red Bromthymol Blue Yellow Cabbage Juice Pink/Red

BASES & INDICATORS Litmus Paper Red  Blue Bromthymol Blue Blue Cabbage Juice Blue/Green

Neutral & Indicators Litmus Paper No Change Bromthymol Blue Green Cabbage Juice Purple

pH Scale: Base Acid Neutral Measures the strength of acids and bases.

Let’s Test it Out!

Student A: Obtain the substance Student B: Test with indicators Student C: Clean small beaker Student D: Make sure everyone records the data SWITCH! * Work Together. Everyone must write down the data, everyone must participate.

Write it down! I am student______. (A, B, C, or D)

Remember 1. Follow all safety procedures. Handle equipment carefully. 2. When your finished collecting data clean up your area. 3. Answer all lab questions. (quiz grade) 4. Finished? Work on your textbook assignment. Pages 409 & 410 #1-12 Page 411 #1-6