Quiz #1

IPS: Safety-Measurement lab

IPS Safety Notes

For Every Lab:
  • goggles kept over your eyes UNTIL Mr. leeds says to take them off
  • Report all accidents/spills to Mr. Leeds IMMEDIATELY

Nurse extension:

  • 2828

Safety equipment in the classroom:

  • fire extinguisher
  • fire blanket
  • eye wash/shower


  • Never taste
  • always waft liquid
  • never waft powder/solid
  • do not touch chemicals
  • if chemicals touch skin: flush area with water for 1 minute AND notify Mr. Leeds


  • hot and cold glass look the same
  • never use chipped/broken glass
  • never use force to remove or insert glass

Alcohol Burners:

  • roll up sleeves, put up long hair
  • never walk away from a lit burner
  • nver point ope end of a hot test tube at yourself or someone else
  • do not look down into a heating test tube
  • make sure burner is capped and flame is out

End of Experiment

  • CLEAN UP AREA & MATERIALS COMPLETELY (other-wise you lose points)
  • Make sure burner is out
  • Refer to first bullet

Reaction in a Bag Lab



A +Liquid=hot (Exothermic Reaction)

B+Liquid= cold (endothermic Reaction)

A+B+Liquid= Bag fills up with air

Experimental Error:

Could have been hole in the bag

  • would not have known that bag fills up

Red liquid:

  • phenol red-Ph indicator
  • (below 7 turns yellow, above 8 turns pink

Solid A

  • Calcium chloride
  • acidic
  • hydro-tropic (attracted to water)
  • Uses: canned vegetables, gatorade/sports drinks, flavors pickles

Solid B

  • Sodium Bicarbonate (B.S)
  • not acidic
  • baking
  • laundry detergent
  • toothpaste

Heating Baking Soda Lab


Post Lab

  1. No major things happen at the bottom
  2. water condensation foggy at the top
  3. bottle losing water goes into plastic container
  4. gas comes from baking soda
  5. droplets on top of glass comes from baking soda
  6. Figure 1.4 heated an empty test tube to show water comes from baking soda
  7. Heated-darker brown
  8. No the heated one is deference because it is not same color as the unheated one (you know unheated is b.soda and tea

Experimental Errors

  1. there could be a hole in the tubing
  2. there could have been a contaminated stirring rod

Extra Question

  1. Is the amount of condensation that forms at the top of heated test tube more or less than the amount of b. soda being heated

It was less because the condensation was produced from the baking soda, and something can never make more than itself

Lab 1.1 Heating Baking Soda

Box Questions (see book for questions)

  • When heated B. soda releases a gas that makes it rise

  • 50 cm (cubed)
  • the width is greater than box b
  • 7cm (cubed)
  • a. 8 b. 27 c. 35
  • second box is bigger
  • because it gets wider=different volume as the surface increases the depth decreases
  • a I=1.3 II=3.9 B. III=1.65 IV=2.51 V=4.50 c. its more accurate
  • a= 0.1 b=1.30
  • 12cm=11.5-12.4 B= 11.95-12.0 C. 11.995-12.004
  • Easier to read/more accurate because there are more lines to read from

Balance/Volume notes


  • Called a single pan balance
  • make sure pan is clean and dry
  • always 0 balance scale before measuring- push riders to zero/ turn knob if necessary


  • Always cm3 (to the third)
  • formula= L x W x H
  • 1cm= 0.1 m
  • 1ml=1cm3