IPS Study Guide
-information compiled by Clara Nguyen-
Event Information
Quiz
What's on the quiz, you may ask? All material covered from 4.9 all the way up to the Acidification Lab.
When?
Monday, Mar 16, 2015, 08:00 AM
Where?
Introduction to Physical Science
Acid Rain Notes
there are gases dissolved in our atmosphere, including:
- carbon dioxide
- sulfur dioxide
- hydrogen chloride
sulfur dioxide - "acid rain"
- sulfur dioxide found in volcanoes, also created by industrial pollution
- acid rain kills forest, pollutes water sources
Sinkholes/Limestone Notes
limestone:
- soft, porous rock (holds water)
- water-soluble, can dissolve if exposed to carbonic acid
- lots of limestone underground
- Florida was covered by ocean in the past
Q: Can you change the acidity of water by dissolving carbon dioxide from our lungs into it? A. Yes
phenol red
pH indicator
hydrogen
gas produced by reaction of magnesium and sulfuric acid
carbon dioxide
gas produced by reaction of magnesium carbonate and sulfuric acid
Q: How does phenol red change as it is placed in more acidic substances? A. It will become clearer.
Two Gases Lab Info
carbon dioxide - dense gas
hydrogen - light gas
gas either escapes or stays in test tube depending on position of test tube and density of gas
Sulfuric Acid Notes
sulfuric acid discovered in 8th century by alchemists - alchemy
alchemy - predecessor to modern chemistry
uses of sulfuric acid
- lead acid batteries (cars)
- fertilizers
- steel industry (prevents rust corrosion)
- dried fruit production (acid is hydrotropic, speeds up drying process)
Two Gases Lab Experimental Errors
- not waiting 30 seconds
- unstopper before inverting
- break surface of water with test tube
- don't collect full test tube of gas
- air bubble in test tube
- stoppers not tight
- not keeping test tube vertical