'Definite proportions' diaporamas de présentation

Chapter 3

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Chapter 3

760 views • 68 slides

Ch. 3: Matter and Energy

Ch. 3: Matter and Energy. Dr. Namphol Sinkaset Chem 152: Introduction to General Chemistry. I. Chapter Outline. Introduction Classifying Matter Physical/Chemical Properties/Changes Conservation of Matter Energy Temperature Heat Capacity. I. Introduction.

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Atomic History

Atomic History . Ancient History. Democritus . Greece . , who was from was the first person to use the term atom during B.C. Democritus defined the atom as being . opposed Democritus because believed that atoms and that matter was . . 400 . indivisible . Aristotle .

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Structure of the Atom

Structure of the Atom. Structure of the atom. Atoms Protons Neutron Electron Nucleus. Historical Background. Continuous theory of Matter: a solid body can be divided and subdivided into smaller pieces without limits.

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What is Chemistry?

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Atomic Models

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chemistry

chemistry. The Laws Governing Formulas and Names. 9.5. A birthday cake for a four-year-old has four candles. The ratio of candles to birthday cake is 4:1. In chemistry, similar relationships exist among the masses of elements as they combine in compounds. 9.5.

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HISTORY of the ATOM

HISTORY of the ATOM. Early Greeks, including Aristotle, believe that all matter composed of 4 elements: earth, water, air and fire. These elements were eternal and unchanging (like a stucco wall). Different substances were made up of the elements in different proportions,

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Bellwork : Friday, September 21st

Bellwork : Friday, September 21st. How are the elements on the periodic table organized?. Elements & Compounds. Chapter 3.4. Periodic Table: History. Dmitri Mendeleev first began to organize the elements by similarities in mass.

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Elements vs Compound

Elements First letter of element symbol is always capitalized Only have one capitalized letter. Compounds Combination of elements Can recognize by how many capital letters (2 or more). Elements vs Compound. H 2 O NaCl Fe O2 Ba(OH) 2 K. Law of Definite Proportions.

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Tuesday!!!!! 11/1/11

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What is a Mineral?

What is a Mineral?. Section 3-1. 1. Naturally Occurring. Found in nature Not man- made. 2. Inorganic. Made from non-living things. 3. Solid. Definite shape & volume Not liquid or gas. 4. Crystal Structure. Have flat sides and sharp corners. 4. Crystal Structures.

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Atoms

Atoms. The Building Blocks of Matter. Objectives. Recognize that science is a progressive endeavor that reevaluates and extends what is already known. (SPI 3221. Inq.1) Compare and contrast historical models of the atom. (SPI 3221.1.1)

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Definite proportions and percent by mass

Definite proportions and percent by mass. Law of definite proportions. The Law of Definite Proportions states that a compound is always composed of the same elements in the same proportion by mass, no matter how large or small the sample.

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Read Sections 2.1, 2.2, and 2.3 in the textbook before viewing the slide show.

Read Sections 2.1, 2.2, and 2.3 in the textbook before viewing the slide show. Unit 6. Atomic views in Greek times (2.1) 18 th Century Laws that led to the concept of atoms (2.2). Atomic Views in Greek Times (2.1). Contrasting views between Leucippus/Democritus and Aristotle

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Development of Atomic Theory

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Laws of Proportion

Laws of Proportion. Law of Definite Proportion Law of Multiple Proportions. Law o f Definite Proportions: Why Do the Formulas Work?. For formulas to work, chemistry of elements has to follow a pattern. John Dalton came up with the pattern in the early 19 th Century.

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Atoms: the Building Blocks of Matter

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Balancing Equations

Balancing Equations. H 2 + Cl 2 ? HCl. Balancing Equations. KI + Br 2 ? KBr + I 2. Balancing Equations. CH 4 + O 2 ? CO 2 + H 2 O. Balancing Equations. V 2 O 5 + Ca ? V + CaO. Balancing Equations. NaCl + F 2 ? NaF + Cl 2. Using Mole Ratios.

548 views • 8 slides