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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