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Daphné Gagnon

on 5 September 2013

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Transcript of Chemistry

The Meaning
Fields of Study That Use chemistry
Beer and wine manufacturers
Cosmetic manufacturers
1o Uses
1. Perfume
2. Digestive system
3. Car fuel
4. Aspirins/medication
5. Photosynthesis
6. Gelatin
7. Baking powder
8. Soap
9. Corrosion
10. Respiratory System

Chemistry is the science of matter and the study of elements: their laws of combination and the different behaviors and reactions they may have.
Digestive System
Car Fuel
Respiratory System
We study chemistry to better understand ourselves and matter that surrounds us. We use chemistry to improve our lives in different ways such as staying healthy and improving our living conditions. People keep doing research involving chemistry to further improve our lives and our environment.
The Reason for Studying Chemistry And It's importance in science
Chemistry has a great importance in science
because it joins together different types of science such as physics and mathematics, biology and medicine and many more.
Perfume is a mix between different chemicals called essential oils (top notes, middle notes, base notes) Thousands of fragrances can be mixed, to create different smells. For example a rose perfume consists of geraniol, citronellol, phenylethyl alcohol and linalool a ratio of 30:25:25:5. (very precise)
We may not realize it but chemistry is present in our daily lives. We all experience chemical reactions continuously, whether it's by breathing, baking cupcakes or burning our toasts in the morning,
1.Saliva-enzymes-speed up chem. reaction, (Starch)

2.Digestive Glands-Stomach lining. Acid+enzyme (Protein)

3. Small int.- pancreas (carb, fat, protein) glands in wall of int. = enzymes

4. Liver-Bile gallbladder (storage) (dissolves fat)
Otto Cycle: Intake stroke, compression stroke, combustion stroke, exhaust stroke

C6H12O6 + 6O2 -> 6CO2 + H2O + Energy

Hydrolysis of collagen: 1 molecule H2O added to amino acids. Protein chains smaller.
When in hot water, the three helices of the gelatin open. This causes the water to get stuck between the helices and it forms a gel.
ex: used in Jello, marshmallows, gummy bears
Baking Powder
Contains baking soda + dry acid
When a liquid is added, bubbles of CO2 are produced.
Causes food to rise. Ex: Bread

6 CO2 + 6 H2O + Light --> C6H12O6 + 6 O2
Chemical Formula: C9H8O4
When rust accumulates on a metal such as iron or copper. Needs O2 and H2O. Salt speeds up the process.
Iron: 2Fe(s) + O2(g) + H2O(l) -> Fe(OH)2
Saponification : animal or vegetable fat heated with NaOH. Sodium chloride is added to the mixture afterward.
The soap is the salt reaction of the base and the acid.
The H and C atoms in the molecule are attracted to the oil while the Na is attracted to the water. The molecule drags dirt off of the skin with the water
Aspirin is composed of a active ingredient (acetylsalicylic acid) that kills the pain. It's mixed with inactive ingredients such as carnauba wax, corn starch, hypromellose, powdered cellulose, and triacetin. If they aren't mixed at the right ratio, some srtonger ingredients could burn people's throat and stomachs.
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