Review Safety Quiz No.2
IPS Study Guide
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Avyah Sharma
Period 7 IPS
Study Guide
September 17, 2013
Pre/Inter-Lab and Post-Lab Notes
Purpose
- purpose as follows in your notebook
- everythings follows in the notebook
Red Liquid
- phenol liquid
- used as ph indicator
- bellow 7 on the ph level makes it turn yellow
- above 8 makes it turn pink
- 0-7-14
- acid-natural-alkaline or base
- measures acidity to 14
- lemon juice is 1.5 on the ph level
- tums are 10 on the ph level
- calcium chloride (calcium and chloride)
- hydrotropic- attracted to and absorbs water (solid a)
- hydrophobic- doesn't like water
- used in canned veggies to suck up water and etc to absorb the moisture
- considered and electrolytes
- used to flavor pickles
- Sodium bicarbonate (baking soda)
- not acidic
- uses in toothpaste, cat litter, and cooking
- rises things
Heating Baking Soda Lab Notes
Pre/Inter-Lab Notes and Post-Lab
- Gas comes from heating of baking soda
- water is colored to see in diagram
- had big air bubble in inverted bottle
- bubble is made of air from the heated baking soda
- gas comes from the baking soda when heated
- gas goes up to the inverted bottle
- top of test tube is cold and the bottom is hot
- droplets come from the hot gas from the heated baking soda touching the cooler part of the test tube, thus condensing it creating liquid.
- control group-un-heated test tube
- expiremental group- heated
- indicator
- tea shows color change and that they are different substances or one changed through the heated. they then would have been the same colors.
- variables