IPS QUIZ 1

For My 8th Grade IPS Class

SAFETY

  • Goggles must be kept over your eyes until Mr. Leeds says to put them away
  • Report all accidents to Mr. Leeds
  • Use common sense
  • Nurse extension: 2828
  • SAFETY EQUPTMENT: Fire extinguisher, fire blanket, eye wash/shower
  • Never taste chemicals
  • Waft liquids
  • Do not waft solids/powders
  • Don't touch chemicals
  • Wash hands with soap and water after lab
  • If chemicals touch skin: flush skin with water for 1 minute AND notify Mr. Leeds
  • Hot and cold glass look the same
  • Never use chipped or broken glass (tell Mr. Leeds and dispose of broken glass in proper trash
  • Never use force to remove or insert glass
  • When using burners: Roll up sleeves, put up long hair, not just pull hair back
  • Never walk away from lit burner
  • Never point the open end of a hot test tube at yourself or someone else
  • Do not look down into the test tube/beaker while it is being heated
  • Make sure burner is capped and flame is out when completely done
  • Clean up area and materials completely
  • Make certain that burner is out if one was used
  • Keep goggles on (over your eyes) until Mr. Leeds says to put them away
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Reaction in the Bag

A+Liquid=Exothermic


B+Liquid=Endothermic

A+B+liquid=gas


RED LIQUID

Phenol Red

PH Indicator

Pink if 8 or above

Yellow if 7 or lower

PH SCALE: Measures acidity, goes from 0-14, 0 Acidic 14 Alkaline


SOLID A

Calcium Chloride (Calcium+ Chorine)

Acidic

Hydrotropic (Absorbs water)

USES: Canned veggies, Flavors pickles, electrolyte


SOLID B

Sodiom Bicarbonate (Baking Soda)

Non acidic

USES: Baking, Cleaning, Toothpaste, Kitty litter, keeps fridge fresh

Scholar Reaction In The Bag Inquiry Demonstration and Lab Activity

Heating Baking Soda

  • Gas comes from baking soda; moisture from gas touches colder sides of test tube, creating condensation
  • Heated test tube+tea=baking soda dissolves; tea is darker
  • Unheated+tea=baking soda settles to bottom; tea is lighter
  • Heated B.Soda and Unheated B.Soda are different substances because they look different
  • Control Group: Unheated test tube
  • Experimental Group: Heated Test Tube
  • Indicator: Tea
  • Variables (Something you try to measure):
  • Independent Variable: Changes dependent variable (Temp.)
  • Dependent Variable: Relies on independent variable (color of tea)
  • CONTROL FACTORS: Amount of tea, Amount of B.Soda, Type of tea, Amount of stirring time, Size of test tube


Exp. 1.1 Heating Baking Soda

Volume

Unit of measurementfor volume: cm^3 (Cubic Centimeters)


Volume=lXwXh (aXbXc)

100cm=1m

Standard unit of measurement= meters (m)

Unit cube: cube with 1cm on all sides

VOLUME OF LIQUIDS

Use graduated cylinder (look at intervals)

Units: mL(milliliters) OR cm^3

1mL=1cm^3

Read from BOTTOM of miniscus

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Balance

Measure to nearest hundredth


Clean disk before use

If metal is touching sides, just move it

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