welcome ! c apt physical science. what is an acid? an acid is a compound that has hydrogen at the...
TRANSCRIPT
Welcome !
CAPT Physical Science
What is an ACID?An ACID is a Compound that has Hydrogen at the Beginning of its
formula
HCl H2SO4 HNO3
What's a BASE ?
- Opposite of an ACID
- Used to Neutralize and
ACID
- Formula ends with -OH
Examples of Acids:
Here’s what you should know about acids:
•Can burn your skin
•React with metals
•Can damage
building materials
How do we Measure ACID or BASE ?
pH Scale
ACIDS vs. BASES
Baking Soda
Alka-Seltzer
Vinegar
Calcium Carbonate (TUMS, Rolaids)
Orange Juice
Lemon Juice
Let's Sort These:
ACIDS vs. BASES
Baking Soda
Alka-Seltzer
VinegarCalcium Carbonate (TUMS, Rolaids)
Orange Juice
Lemon Juice
Let's Sort These:
What isACIDRAIN ?
ACID Rain
When pollutants combine with water they make acid rain, rain that is acidic (pH<5.5)
What are some environmental concerns with Acid Rain?
Acid Rain Lab
Lab Discussion & Analysis
How is the type of building material affected by acid rain?
What is the Independent Variable?
What is the Dependent Variable?
What should be Controlled in this experiment?
Acid / Base Review
Term DefinitionBegins with an H
BASE0-14 (7 is neutral)
STRONG ACIDSRain w/ pH <5.5
SO, NO pollutants
Acid / Base Review
Term Definition
ACID Begins with -H
BASE Ends with -OH
pH SCALE 0-14 (7 is neutral)
STRONG ACIDS pH 0-3
ACID RAIN Rain w/ pH <5.5
SO, NO POLLUTANTS Combines w/ H2O
Polymers"Plastics"
What are some Advantages of using Polymers?Strong
Light Weight
FlexibleLots of variety
TENSILE STRENGTH
Cross-Linking
Cross-Linking increases the strength of the Polymer
Recycling Codes