Chapt 1 Slides

8/4/2019 Chapt 1 Slides

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Chemistry: An Introduction

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Chemistry in Everyday Life

Automotive industry

Cosmetics

Pharmaceuticals

Cleaning products

Clothing

Food

Fireworks

Nature



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What is Chemistry?

Chemistry can be defined as the science that deals

with the materials of the universe and the changes

that these materials undergo

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Chemical Reactions

Burning gasoline in your car produces water, carbon monoxide, carbon

dioxide, and other substances

Baking a cake at homeproduces carbon dioxide - the same gas as

gasoline!!

Digesting your food also produces ??????


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Science!

Science is a framework for gaining andorganizing knowledge.

Science is a plan of action a procedure

for processing and understanding certaintypes of information.

Scientists are always challenging our current

beliefs about science, asking questions, andexperimenting to gain new knowledge.

Therefore the scientific method is needed.


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How Do Scientists Think?

Solving problems Observation - stated information gathered about

a known problem

Hypothesis - propose a possible solution to theproblem based on the observations

Ex. Allergic reactionWhat are some observations you might make? What hypothesis might you derive from the

observation?


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The Scientific Method

1. State the problem - write it down

2. Make observationsand collect data

3. Formulate a hypothesis

4. Perform experiments - test the hypothesis

5. Conclusion - was your hypothesis correct? Whyor why not? Is the problem solved? - No - Repeatsteps 1-5.

*Quiz


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Hypothesis vs. Theory

Hypothesis - defined as an educated guess about aproblem

Theory - a set of tested hypotheses that agree withthe observations giving an overall explanation ofsome part of nature. Model

Can a theory change over time?

*Quiz


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Natural Law

Natural Law - defined as a theory about the naturalworld that has been proven many times to be truein many different systems.

*Quiz

Ex. Law of Conservation of MassMass can neither be created or destroyed - onlytransformed

Therefore it can be stated that mass is always conserved


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Learning Chemistry

Learn the vocabulary (memorization)

Develop critical thinking skills What is known or given about the problem?

What is the unknown? What information can I gather to lead me to the answer?

(ie. observations/data)

Patience

You wont get everything on the first try! Trust yourself and your learning style

What helps you learn things the easiest?

Use these tools to guide you in your study

Documents

Chapt 1 Slides