Study Guide for Quiz #1

By Alexis Adornato

First Quiz

Wednesday, Sep. 18th, 1:45pm

2700 Saint Andrews Boulevard

Boca Raton, FL

Things that will be on it

1. Reaction in a Bag Lab

2. Heating Baking Soda Lab

3. Volume Notes

4. Balance Notes

5. Box Questions 1-13 (omit #2)

Lab Format:

Your Name: Alexis Adornato

Date:


LaboratoryTitle/Name

I. Purpose:

II. Procedure:

III. Materials:

IV. Lab Safety:

V. Data and/or Observations:

VI. Experimental Errors:

VII. Conclusion:

VIII. Extra Question(s):


1. Reaction in a Bag Lab

-Purpose was to record the observations that occur when multiple chemical substances are combined and to use your observations to understand the reactions of the chemicals


-Red Liquid was Phenol Red

-Used as a PH indicator

-PH scale:

-Measures acidity

-goes from 0-14

-0-6 is acidic

-7 is neutral

-8-14 is alkaline

-Below 7 turns yellow

-Above 8 turns pink

-2 Solids

-A. was Calcium Chloride

-Mildly acidic

-Attracted to water (hydrotropic)

-Uses:

-Canned Veggies, Electrolytes, Flavors Pickles

-B. was Sodium Bicarbonate (baking soda)

-Not acidic

-Uses:

-Baking, toothpaste, laundry detergent, cat litter

2. Heating Baking Soda Lab

-Purpose was to observe and record the reaction that occurs when baking soda is heated


-At the bottom of the test tube the baking soda turned a brownish/black

-Condensation occurred at the top of the test tube from hot gas touching the cooler part of the test tube at the top and it turns back into liquid

-the water level in the water bottle is going down

-The gas was produced when the baking soda was heated

-The heated baking soda and the regular baking soda must be different from each other because when we added the same tea to both there was color difference

-Control Group: unheated baking soda

-Experimental group: heated baking soda

-Indicator: tea

-Variable: Something you try to measure

-Independent Variable: Causes a change in the dependent variable

-Dependent Variable: Color of the tea

-Control Factors:

-Same Type of Tea

-Same amount of tea

-Same temperature

-Same Stirring time

-Same size of test tube

3. Volume Notes

-Unit of Measurement: cm3


-Volume= (l)(w)(h)

-Standard Unit of Length=meter

-1 centimeter= 0.01 Meters

-Volume of Liquids

-use a graduated cylinder to measure volume

-Units=milliliters (ml) or cm3

-Read from bottom of the meniscus

4. Balance Notes

1. Check the pan is clean and dry


2. Always "zero" balance before each massing

-Push all rider to zero (left)

-Use adjustment knob if needed

3. Never Switch pans

4.Pick up balance by red bar only

5. Don't zero balance when you're done

5. Box Questions

For box questions see your own answers in your lab book and text book!


Format

1. Matching

2. Fill in the blank

3. Multiple Choice

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