Chapters 1
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Chapters 1. Introduction To Chemistry. CHAPTER OUTLINE. WHAT IS CHEMISTRY?. Materials of the universe can be of several forms:. Chemistry is the science that deals with the materials of the universe, and the changes they undergo. Gas:. air, oxygen. Liquid:.

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Chapters 1

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Chapters 1

Chapters 1

Introduction

To Chemistry


Chapter outline

CHAPTER OUTLINE


What is chemistry

WHAT IS CHEMISTRY?

  • Materials of the universe can be of several forms:

  • Chemistry is the science that deals with the materials of the universe, and the changes they undergo.

Gas:

air, oxygen

Liquid:

water, gasoline, vinegar, orange juice

Solid:

rock, charcoal, table salt, sugar, wood


Changes in matter

CHANGES IN MATTER

  • Burning of charcoal

charcoal + oxygen  carbon dioxide

  • Burning of gasoline

Gasoline + oxygen  carbon dioxide + water

+

+


Changes in matter1

CHANGES IN MATTER

  • Fermentation of grape juice

glucose  ethyl alcohol +carbon dioxide

  • Souring of wine

Ethyl alcohol + oxygen  acetic acid

+

isopropyl alcohol


Scientific method

SCIENTIFICMETHOD

  • The scientific method is a process of creative thinking and testing aimed at objective and verifiable discoveries.

  • It is generally composed of the following steps:


Scientific method1

SCIENTIFICMETHOD

NATURAL LAW

Observations concurred by many.

OBSERVATION

HYPOTHESIS

Facts that our ideas must explain

Scientific guess or proposal that explains observations

Conceptual assumptions that explain data from experiments.

EXPERIMENT

Procedure to test hypothesis. Measures one variable at a time

Predicts related phenomena

MODEL

(THEORY)


Scientific method2

SCIENTIFICMETHOD

OBSERVATION

Theory modified if additional experiments do not support it

HYPOTHESIS

Hypothesis is changed if experiments do not support it.

EXPERIMENT

MODEL

(THEORY)


Success as a beginning chemist

Success as a Beginning Chemist 

  • You must be curious and imaginative.

  • Be willing to do calculations.

  • Be committed to learning the material.

  • Do your homework.


Chapters 1

THE END


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