1. Zumdahl • Zumdahl • DeCoste
World of
CHEMISTRY

2. Chemistry: An Introduction
Chapter 1
Chemistry: An Introduction

3. The Importance of Learning Chemistry
Objective: To Understand the importance of learning chemistry
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4. 1.1 The Importance of Learning Chemistry
Chemistry occurs all around us:
Examples

5. Real World Chemistry Chloroflurocarbons (CFC’s) Uses Non-corrosive
Resists decomposition
Uses
Air Conditioning/ Refrigeration
Insulation
SOUND LIKE THE PERFECT PRODUCT?
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6. Benefits of Learning Chemistry
Learn how to problem solve
Applicable in business
Health
Environment
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7. Objective: To define chemistry
1.2 What is Chemistry?
Objective: To define chemistry
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8. 1.2 What is Chemistry?
Chemistry is the science that deals with the materials of the universe and the changes that these materials undergo.
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9. Chemical Changes Occur Around Us
Wood burns → H2O +CO2
Steel oxidizes → RUST
Eggs, Sugar, Flour + BAKING POWDER →CAKE
Combustion of low quality Coal → Acid Rain
Show Video and ask students to note changes , colors, steam emission,
What are possible explanations?
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10. Macroscopic vs. Microscopic
Example: Tree → →→
H2O , CO2 and C6H12O6
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11. 1.3 Solving Problems Using a Scientific Approach
Objective: Recognize the general steps scientist use in solving problems
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12. Problem Solving
Recognize the problem and state it clearly (making and observation).
Propose possible solution/possible explanation (forming a hypothesis).
Decide which solution is best/is the explanation plausible (perform and experiment).
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13. Problem Solving Observe Hypothesis Experiment
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14. 1.4 Using Scientific Thinking to Solve a Problem
Objective: To Illustrate the scientific method.
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15. The Case of the Mysterious Illness
Symptoms: Nausea, muscle pains, irritability, weight Loss, excruciating pain, uncharacteristic fits of anger.
Can You Solve The Mystery? What other information do you need?
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16. Objective: To describe the method scientist use to study nature.
1.5 The Scientific Method
Objective: To describe the method scientist use to study nature.
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17. Steps in the Scientific Method
Observe
Hypothesis
Experiment
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18. Completing the Scientific Method
Conduct the problem solving sequence
A set of tested hypothesis that supports our observations → THEORY (model)
LAWS describe a broad variety of observations and experiences – they are the basic rules under which nature operates.
Observation = something we can witness and can be recorded
Theory is an interpretation, i.e. Why something happens.
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19. Clarifying Terms
Observation = something we can witness and can be recorded.
Theory = an interpretation, i.e. Why something happens.
Theories change as more information becomes available
Law = summary of observed behavior, i.e. What Happens.
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20. Figure 1.1: The various parts of the scientific method.
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21. Objective: To develop successful strategies for learning chemistry.
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22. Figure 1.2: Student-centered learning.
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23. Tips For Success Memorizing is not understanding.
You memorize facts
You understand the core principles using the facts.
Practice, Practice, Practice!
On Line Support
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