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
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
Balance
Measure to nearest hundredth
Clean disk before use
If metal is touching sides, just move it