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chem 115 chapter 1

by: Aleah Oman

chem 115 chapter 1 BIOL 119

Aleah Oman

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chapter one of chemistry 115
Principle Structure and Function
Dr. Marshall/ Dr.Nachappa
Class Notes
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This 3 page Class Notes was uploaded by Aleah Oman on Monday February 1, 2016. The Class Notes belongs to BIOL 119 at Indiana University Purdue University - Fort Wayne taught by Dr. Marshall/ Dr.Nachappa in Winter 2016. Since its upload, it has received 32 views. For similar materials see Principle Structure and Function in Biology at Indiana University Purdue University - Fort Wayne.

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Date Created: 02/01/16
Chemistry 115 – Blombach Ch. 1 The Science of Change 1.1Terms 1. Chemistry a. The study of matter and the change matter undergoes 2. Matter a. Anything has mass and can take up space 3. String theory a. Hasn’t proved anything 4. Scientific Method a. Gather data through observations and experiments b. Identify a hypothesis (what is taking place) c. Come up with an experiment to “prove” d. Becomes a theory and then if good enough becomes a law 1.2Classification of Matter 1. Matter a. Substance or mixture of substances 2. Substance a. Form of matter that has definite composition and distinct properties i. Salt, iron, water, mercury ii. Chemical or appearance, smell, taste, other properties to identify b. Mixture of physical combo of 2+ substance c. Homogenous mixture is uniform i. Also called solution ii. Sea water, apple juice d. Heterogenous mixture is non-uniform 3. 3 different states of matter a. Solid i. Definite volume and shape b. Liquid i. Definite volume and no definite shape c. Gases i. No definite volume or shape 4. Other states of matter a. Plasma i. Lose electrons b. Can change into different matters 1.3Properties of Matter 1. 2 types of properties of matter a. Quantitative property i. Can be measured and expressed with numbers b. Qualitative property i. Based on observation ii. Can this happen? Why? 2. Physical Properties a. Can be observed and measured without changing the identity of the substance i. Color, melting point, boiling point 3. Physical Properties/Change a. Changes but identity of matter doesn’t change i. State, melting point, freezing point, condensation b. Physical process i. Mixture separates, identities don’t change 4. Chemical Properties a. Substance exists as it interacts with another substance (makes new substance) i. Yeast mix with sugar = CO2 ii. Flammability, corrosiveness 5. Chemical Changes a. Cant reverse chemical changes i. Digestion, combustion, oxidation b. Original substance no longer exists 6. Extensive property a. Depends upon how much matter you have i. Mass-volume 7. Intensive property a. Doesn’t depend on how much you have i. Temp – density 1.4Scientific Measurement 1. Quantitave properties a. Properties that can be measured b. Always include a unit c. English system has units i. Feet, gallon, pound, etc. d. Metric system i. Farenheit, Celsius 2. SI Base Units a. Revised metric system is called the International System of Units (SI) i. Designed for universal use by scientists b. 7 basic units Unit Name of unit Symbol Length Meter m Mass Kilogram kg Time Second S Electric current Ampure A Temperature Kelvin K Amount of Mole mol substance Luminous Candela cd intensity The magnitude of a unit may be altered to a particular application using prefixes -milli, centi, etc… 3. Mass a. measure of the amount of matter is an object or sample b. mass doesn’t change but weight does c. mass SI unit is kilogram (kg) or gram (g) i. I kg = 1000 g = 1x10^3 d. Atomic mass unit (amu) can express the matter 4. Temperature a. 2 temperature scales used in chemistry b. Celsius i boiling 100 degrees ii. freezing point (0 degrees) ii. Boiling (100) points \


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