Chemical substance

Helium

Mixture

Gas

Solid

Chemical reaction

Fundamentals of Chemistry What is Chemistry? What is Matter? How does it change? (How do we organize the types of changes? What categories? How do we categorize the types of matter? We can identify the specific types of matter with its ________ (characteristics). Definition: How many Smallest unit Examples Element: Compound: Mixture: What is the table of elements called? Is a compound considered a pure substance? How is a compound different than a mixture? Is a mixture considered a pure substance? How are mixtures classified? Draw sketches: solid liquid gas Macroscopic Microscopic How do the microscopic models explain the macroscopic properties? Property Solid Liquid Gas Fluidity (fixed shape) Why? Compressibity (fixed volume)

Chapter 1.2 Outline

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Homogeneous and heterogeneous mixtures

Chemical elements

Condensed matter physics

Chemical substance

General chemistry

Chemical compound

Mixture

Solution

Gas

Liquid

Matter Classified by? Physical State (Gas/ Liquid/ Solid) Composition (Element/ Compound/ Mixture) States of Matter Gas (vapor) No fixed volume or shape Uniformly fills its container Can be compressed to occupy a smaller volume Can be expanded to occupy a larger volume Molecules are far apart, move quickly, and often collide with the surrounding container Liquid Distinct volume (independent of container) No fixed shape (assumes shape of occupied container) Can't be compressed Molecules are packed closely but can still move (they flow over each other, reducing viscosity Solid Definite shape and definite volume Can't be compressed Molecules have fixed positions an wiggle only slightly *Temperature and pressure changes lead to phase changes of the substance

Chapter 1.3 Outline

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Mixture

Solid

Melting

Characteristic property

Properties can be? Physical - can be observed without changing identity or composition of the substance Ex. Color, odor, Density, Melting Point, Boiling Point, Hardness Chemical - describe the way a substance may change or react to form other substances Ex. Flammability - the ability of a substance to burn in the presence of oxygen Intensive - do not depend on the amount of sample being examined Help to identify substances Ex. Temperature, melting point Extensive - Depend on the amount of sample Help to show quantity of a substance Ex. Mass, volume Physical and Chemical Changes Physical Change - substance changes its physical appearance, but not its composition Changes of state are physical changes Chemical Change - substance changes into a chemically different substance

Pearson Biology Guided Reading Answers Chapter 2

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Chemical bonding

Chemical properties

Supramolecular chemistry

Valence

Chapter 2: The Chemical Basis of Life 8 Copyright ? 2015 Pearson Education, Inc. name ________________________ Period _________ # 152826 Cust: Pearson Au: Reece Pg. No. 8 Title: Active Reading Guide for Campbell Biology: Concepts & Connections, 8e C / M / Y / K Short / Normal DESIGN SERVICES OF S4-CARLISLE Publishing Services Chapter 2: The Chemical Basis of Life Guided Reading Activities Big idea: Elements, atom, and compounds Answer the following questions as you read modules 2.1?2.4: 1. Match the following terms with their correct definitions: matter, trace element, emergent properties, element, and compound. a. A substance required by humans in small quantities: _____________

Pearson Guided Reading Activities KEY CH2

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Chemical bonding

Chemical properties

Supramolecular chemistry

Valence

Chapter 2: The Chemical Basis of Life 8 Copyright ? 2015 Pearson Education, Inc. name ________________________ Period _________ # 152826 Cust: Pearson Au: Reece Pg. No. 8 Title: Active Reading Guide for Campbell Biology: Concepts & Connections, 8e C / M / Y / K Short / Normal DESIGN SERVICES OF S4-CARLISLE Publishing Services Chapter 2: The Chemical Basis of Life Guided Reading Activities Big idea: Elements, atom, and compounds Answer the following questions as you read modules 2.1?2.4: 1. Match the following terms with their correct definitions: matter, trace element, emergent properties, element, and compound. a. A substance required by humans in small quantities: _____________

Ch. 2: The Chemical Context of Life

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Chapter 2 The Chemical Context of Life Camobell Bio 9th Edition

Sulfur

Oxygen

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2.1 An element is a substance that cannot be broken down to other substances by chemical reactions. A compound is a substance consisting of two or more different elements combined in a fixed ratio. Essential elements are needed for a healthy life and to reproduce. Humans need 25, plants need 17 Oxygen (O), Carbon (C), Hydrogen (H) and Nitrogen (N)?make up 96% of living matter Calcium (Ca), Phosphorus (P), potassium (K), sulfur (S), and a few other elements accounting for most of the remaining 4% of an organism's mass. Trace elements are required by an organism in only minute quantities. ? 2.2 Protons and neutrons are electrically charged. Proton= positive, electron=negative, neutron=neutral

Chapter 3 Notes

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Oxygen

Period

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BIOL 1020 - CHAPTER 2 LECTURE NOTES Chapter 2: The Chemical Context of Life You must understand chemistry to understand life (and to pass this course)! Elements and Atoms Elements ? substances that cannot be further broken down into other substances (at least by ordinary chemical reactions) every element has a chemical symbol (H for hydrogen, O for oxygen, etc.); this is most familiar from the periodic table Essential elements: elements that an organism needs to live. They are similar along different organism but there is some variation Trace element: elements that are required by an organism in only minute quantities E.g.: Iron (Trace) Oxygen, Hydrogen, Nitrogen, and Carbon(Essential elements)

Wiley Joeking

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Economics

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