Atomic Structure

Mar 30, 2019

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Atomic Structure. www.lab-initio.com. Modern Atomic Theory. All matter is composed of atoms Atoms cannot be subdivided, created, or destroyed in ordinary chemical reactions . However, these changes CAN occur in nuclear reactions!

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Atomic Structure

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Atomic Structure

What is an atom?. Atom: the smallest unit of matter that retains the identity of the substanceFirst proposed by Democratus . Atomic Structure. Atoms are composed of 2 regions:Nucleus: the center of the atom that contains the mass of the atomElectron cloud: region that surrounds the nucleus t

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Atomic Structure

Atomic Structure. Chapter 7: Describe the properties of electromagnetic radiation . Understand the origin of light from excited atoms and its relationship to atomic structure. Describe the experimental evidence for wave-particle duality. Describe the basic ideas of quantum mechanics .

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Atomic Structure

Atomic Structure. The Atom Smallest unit of an element that can exist alone Greek for “ uncuttable ” Anatomy of an Atom: Electrons, Protons, Neutrons The Nucleus Proton Positive charge Determines the atomic number Number of Protons determines the number of Electrons Neutron No charge

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“ Atomic Structure”

“ Atomic Structure”. Defining the Atom. OBJECTIVES: Describe Democritus’s ideas about atoms. Defining the Atom. OBJECTIVES: Explain Dalton’s atomic theory. Defining the Atom. OBJECTIVES: Identify what instrument is used to observe individual atoms. Defining the Atom.

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Atomic Structure

Atomic Structure. Composition of the Atom. There are three subatomic particles which make up the atom: Protons Electrons Neutrons. Protons. The proton is a positively charged particle which is found in the nucleus of the atom.

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Atomic Structure

Atomic Structure. Image courtesy of www.lab-initio.com. B.C. 400 B.C. Demokritos and Leucippos use the term "atomos” . Chemistry Timeline #1.  2000 years of Alchemy . 1500's Georg Bauer: systematic metallurgy Paracelsus: medicinal application of minerals. 1600's

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Atomic structure

Atomic structure. Outcomes:. You must be able to describe what an atom is made of and how atoms of an element are represented You should be able to describe the properties of all subatomic particles You could be able to explain what an isotope is. Everything is made up of atoms….

961 views • 35 slides

Atomic Structure

Atomic Structure. Spectra of Science Miss Amole. By PresenterMedia.com. What is an atom?. Simplest unit in an element Determines the properties of that element “atom” is derived from a Greek word meaning “unable to be divided”

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ATOMIC STRUCTURE

ATOMIC STRUCTURE. Chemistry Glossary. Pure substances – when only one type of element or compound is found in a substance. Mixture – when more than one element or/and compound is together in a substance. Element – made up of only one type of atom

583 views • 28 slides

Atomic Structure

Atomic Structure. Atomic Structure. Atoms: tiny units that determine the properties of all matter. Democritus. “atom”: unable to divide Suggested that the universe was made of invisible units named atoms. The movements of these atoms caused changes in matter. Was unable to provide evidence.

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Atomic Structure

Atomic Structure. Review for Quiz. The nucleus is made of protons and neutrons and has a negative charge. The nucleus is made of protons and neutrons and has a positive charge. The nucleus is made of electrons and has a positive charge.

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Atomic Structure

Atomic Structure. What are the 3 major parts of an atom?. What are the 3 major parts of an atom?. Proton Neutron Electron. Draw a diagram showing the location of each part of the atom. Draw a diagram showing the location of each part of the atom.

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Atomic Structure

Atomic Structure. What are the 3 major parts of an atom?. What are the 3 major parts of an atom?. Proton Neutron Electron. Each particle has a charge (or no charge). Describe Proton.

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Atomic Structure

Chapter 4: Elements, Atoms, and Ions. Atomic Structure. Learning Goals:. Describe the components of an atom. Distinguish between protons, neutrons, and electrons in terms of charge and mass. ChemQuestion :.

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Atomic Structure

Atomic Structure. Elements. Only about 118 different elements make up all the materials we know Only 88 of these are found in nature The remaining elements are made in laboratories and are too unstable (radioactive) to occur in nature in significant amounts

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Atomic Structure

Atomic Structure. Break. Break. Matter. Atom. 10 -10 meter (1 angstrom). Kanad, 600 BC. 1 meter. Elements are made of tiny particles called atoms. All atoms of a given element are identical. The atoms of a given element are different from those of any other element.

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Atomic Structure

Atomic Structure. Unit 4 Expected test date: 28-Oct-08. The Atom. The smallest particle of an element that still retains the properties of the element. Atoms are much too small to see What does it look like?. Subatomic Particles. Atoms are made of smaller particles Protons Neutrons

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Atomic Structure

Atomic Structure. Basic and Beyond. What are the 3 major parts of an atom?. Protons. Electrons. Neutrons. Where is each located?. What are the charges on each basic part?. The Nucleus. The nucleus contains most of an atom's mass. Why?. The nucleus is the central part of an atom.

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ATOMIC STRUCTURE

ATOMIC STRUCTURE. Atomic Structure. Much of what we know about the very nature of matter and the universe around us is due to the work of pioneering chemists, mathematicians and physicists in the late 19 th and early 20 th centuries

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Atomic Structure

Atomic Structure . History of Atomic Theory. Democritus (460 - 370 BC). Was the first person to come up with the idea of atom Believed that all matter was composed of indivisible particles he called “ ATOMS ” Which is derived from the Greek word “Atomos” – meaning indivisible

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