Study Guide for IPS Quiz #1

By Zachary Silfen

Lab Safety Notes:

For Every Lab:
  • Goggles must be kept OVER YOUR EYES until Mr. Leeds say you can take them off
  • Report ALL accidents/spills ti Mr. Leeds IMMEDIATELY
  • Try your best to use common sense
In Case of an Emergency:
  • Nurse: ext. 2828
Safety Equipment in Classroom:
  • Fire Extinguisher
  • Fire Blanket
  • Eye Wash/Shower
  • Never Taste Chemicals
  • Always WAFT liquids to detect odor
  • Avoid touching chemicals
  • Always wash your hands with soap and water after lab
  • If chemicals touch skin, flush skin for 1 minutes AND notify Mr. Leeds
  • Hot glass 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 ti remove or insert glass
Alcohol Burners:
  • Roll up sleeves, put UP long hair, not just pull back
  • Never walk away from a lit burner
  • Never point the open end of a hot test tube at yourself or someone else
  • Do not look down into a test tube/beaker while it is being heated
  • Make sure burner is capped and flame is out when done
End of Experiment:
  • Make certain that burner is out if one was used
  • Keep goggles on (over eyes) until Mr. Leeds says to put them away

Reaction In A Bag Post Lab Notes:

Red Liquid: Phenol Red
  • Used as a pH indicator
  • Below 7 turns yellow (acid)
  • Above 8 turns pink (alkaline)
2 Solids: "A" - Calcium Chloride (calcium + chlorine)
  • Acidic (mildly)
  • Hydrophobic (attracted to water)
  • Uses: Canned Veggies (keep from getting mushy)
"B" - Sodium Bicarbonate (baking soda)
  • Not acidic
  • Uses: Baking , toothpaste, cat litter

Heating Baking Soda Post Lab Notes:

Blue Dot Answers:
  1. Nothing major occurs
  2. Condensation
  3. Water leaving bottle, replaced with a gas
  4. Gas come from heating baking soda
  5. Condensation is coming from the heat of vapor touching the cooler top of the test tube and turns it back into a liquid
  6. The headed beakers liquid is darker
  7. Must be different because heated test tube is different color than unheated

Control Group: Unheated beaker

Indicator: Tea, shows color change (heated beaker is not baking soda)

Variable: Something you try to measure

Experimental Group: Heated beaker

Independent Variable: Causes a change in dependent variable (temperature)

Dependent Variable: Color of tea

Control Factors: Factors we can control: use same type of tea, same amount of baking soda, same temperature, same stirring time, and same size test tube

Experimental Errors:

  1. Hole in rubber tubing: wont see bottle fill with gas
  2. Stopper not snug: won's see bottle fill with gas
  3. Stirring rod is not clean at beginning: cross contamination of test tubes
Extra Question:

Answer: Less (or equal too), because the condensation comes from the baking soda, it can't produce more than itself.

Volume Notes:


Unit of Measurement: cm^3 (cubic centimeters)

Volume: L x W x H (a x b x c)

Standard Unit of Length: Meter (m)

1 Centimeter (1 cm) = 0.01 Meters (centi means 100; 100 cm=1 meter)

Unit Cube: 1 cm on each edge (1 cubic centimeter; 1 cm^3)


Use a graduated cylinder to measure volume of a liquid

ALWAYS check the intervals or scale

Units: Milliliters (mL) or cm^3 (1 mL = 1 cm^3)

ALWAYS read from bottom of menicus

Single Pan Balance Notes:

  1. Check to make sure that pan is clean and dry
  2. Always "zero" balance before EACH massing
  • Push all riders to zero
  • Use adjustment knob if needed
3. NEVER switch pans

4. Pick up balance by red bar only

5. Don't zero balance when done

Box Question Answers:

1. (Page 5) When heated it releases a gas, that helps dough/batter to rise.

3. (Page 8) 50 Cubic Centimeters

4. It is wider and higher.

5. 7 cm^3

6. a) 8 cubes

b) 27 cubes

c) 8 cm^3 and 27 cm^3

7. Box 2

8. The more surface area there is the less depth is needed, and the less surface area there is the more depth there is.

9. a) I. 1.2 cm II. 3.7 cm

b) III. 1.65 cm IV. 2.52 cm V.4.50 cm

c) So you can be most accurate.

10. a) 0.1 cm^3

b) 0.2 cm^3

11. a) 4.0 cm^3

b) 1.25 cm^3

12. 12 cm = 11.5 cm - 12.4 cm

12.0 cm = 11.95 cm - 12.04 cm

12.00 cm = 11.995 cm - 12.004 cm

13. Lines are further apart because there is less surface so there is more depth, and it is easier to read.