Lecture 2 Why Study Chemistry

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Lecture 2 - Why Study Chemistry?
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Topics

• Chapter Topic
• 1-3 Review
• 5 Periodicity, Atomic Structure
• 6 Ionic Compounds
• 7 Covalent Compounds
• 4 Reactions
• 8 Thermochemistry

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• Chapter Topic
• 13, 17 Chemical Equilibrium, Thermodynamics
• 9 Gases
• 18 Electrochemistry
• 11 Solutions
• 15, 16 Acids and Bases
• 10 The Solid State
• 12 Chemical Kinetics
• 22 Nuclear Chemistry
• 23 Organic Chemistry

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Readings

• Chapter 1 and 2.

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Assignment 1

• Chapter 1 and 2
• Answers are posted on the website.

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• What is Chemistry?
• Why Study Chemistry?

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What is Chemistry?

• Study of the structure of matter
• From the smallest (atoms) to the largest
  (materials)
• Atomic or molecular properties affect material
  properties
• Study of the changes matter undergoes (reactions)

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Why Study Chemistry?

• ACTIVITY CHEMISTRY
• Had a shower Surface
• Put on Deodorant Biochemistry, Al
• Put on Makeup Colors
• Put on Aftershave Fragrances
• Put on Clothes Polymers

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• ACTIVITY CHEMISTRY
• Made Breakfast Food
• Ate Breakfast Metabolic
• Had a Cigarette Drug
• Travelled on the Bus Combustion, Pollution
• Wrote Notes Surface

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• ACTIVITY CHEMISTRY
• Breathing, Biochemistry
• Thinking,
• Being

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Better Life Through Chemistry

• Disinfection of drinking water by chlorine
• Chemical fertilizers and pesticides
• Synthetic polymers
• Fewer cavities (fluoridation of water)
• Drugs
• Junk food

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Types of Chemistry(and chemists)

• Organic - C containing molecules
• Inorganic - often metal containing molecules
• Physical - mechanisms, energy flow

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e.g. making water

• 2 H2(g) O2(g) ¾ 2H2O(g)
• What are the reaction steps?
• Is heat released?
• How fast is the reaction?

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Types of Chemistry(and chemists)

• Organic - C containing molecules
• Inorganic - often metal containing molecules
• Physical - mechanisms, energy flow
• Analytical - identification and measurement
• Bio - chemistry of life

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e.g. O3 Layer Thinning

• Caused by organic chemicals
• Accelerated by inorganic species
• Reaction mechanism - physical chemistry
• Ozone measurement - analytical chemistry
• Effects of thin ozone - biochemistry