Atomic Structure.

Slides:



Advertisements
Similar presentations
Atomic structure.
Advertisements

18 Bohr Models Lesson 3.1 Extension. Element Name: _______________________ Chemical Symbol: _______Atomic Number: _______ Diagram the Bohr atom which.
The Chemistry of Life Section 2.1: The Nature of Matter Teacher: Mrs. Rolle Presenter: Mevan Siriwardane September 27, 2007.
Bohr Model Diagrams Lesson 3.1 Extension.
Vocabulary ATOM-the smallest unit that maintains the characteristics of an element – Nucleus- The center of the atom, contains protons and neutrons –
Atomic Structure BASIC INFORMATION.
Atomic Structure.
The Atom Scientists discovered that materials around us are made up of millions of tiny particles. They called these particles atoms.
Bohr Diagrams or Shell Models
What part of an atom is the arrow pointing to? A. proton B. electron C. neutron D. shell E. nucleus.
ELECTRONS. Review Electrons were discovered by ______________ Electrons have a ___________ charge Electrons are located…. Outside of the nucleus in an.
Inside An Atom. Nucleus Every Atom has a core called a nucleus. Every Atom has a core called a nucleus. The Nucleus is largest part of an atom (about.
Atomic Structure. It used to be thought that atoms were small indivisible particles. It was thought that the only difference between the atoms of one.
First 20 Elements in the Periodic Table
Unit 2 Physical Science Atoms and the Periodic Table
Visit for more Learning Resources
Atomic Structure.
ATOMS The smallest unit of an element that retains properties of the element.
Atomic Structure and Isotopes
Today Atomic particles electrons, protons, neutrons
Atom Structure White Board Practice.
Subatomic Particles.
Isotopes.
ELEMENTS, IONS AND ISOTOPES

6.1 Part 1: The Atom.
Bohr-Rutherford Diagrams
The Atom Grade 9 Science Ms. Raper..
Do these steps on the front of the worksheet
Elements & Atoms Section 2.1.
Bohr’s Model of Electron Arrangement
The Atom.
What’s the Matter? Atomic Basics
Atomic Structure Nat
The Atom & the Periodic Table
Yayyyyyyyy Atoms! Atoms and their Parts.
Atomic Structure February 23 & 24.
Move and label the protons, neutrons, and electrons to build an atom of each of the following elements.
Building Atoms.
Atom Model Using Periodic Table Boxes
Bell work – what is an atom?
Bell work – what is an atom?
Introduction to Atoms Exploring Inner Space.
1.
Build An Atom Workshop: Hydrogen 1
Isotope -an atom with a different number of NEUTRONS than protons.
Unit 2 Chemical Categories.
Daily Science Fill in and label all appropriate information about Manganese using the periodic table. What’s the proton # What’s the electron # What’s.
Composition of Matter Everything in the universe in made up of MATTER.
Chapter Six: The Atom 6.1 Fundamental Particles and Forces
Atoms UNIT 2 – Lesson 2 Notes.
1 The first shell always has to have 2 electrons!.
Chemistry Unit: Chapter 3
The Structure of an Atom
Part 1.
Basic Chemistry Ch. 2.
Structure of an Atom.
Structure of the Atom Describe the structure and arrangement of atomic particles. Characterize and classify elements based on their atomic structure.
Introduction to Atoms Exploring Inner Space.
Protons & Neutrons.
Isotopes & Ions.
Section 2.1: The Nature of Matter Adapted from Teacher: Mrs. Rolle
More about Elements.
Distinguish Between Atoms
Drawing Atoms Rutherford Bohr.
All life functions are driven by chemical reactions.
MONDAY 10/20 What is an atom? What are the 3 parts of atoms?
Example Example 1: The atom of an element has a mass number of 214 and an atomic number of 82. a) How many protons and neutrons does it have? The number.
Atomic Structure Notes
neutral equal electrons Atomic Number = Protons Element Symbol
Presentation transcript:

Atomic Structure

The Structure of the Atom The Ancient Greeks used to believe that everything was made up of very small particles. I did some experiments in 1808 that proved this and called these particles ATOMS: John Dalton ELECTRON – negative, mass nearly nothing PROTON – positive, same mass as neutron (“1”) NEUTRON – neutral, same mass as proton (“1”)

The Nucleus is made of Protons and Neutrons The Atom Electron Nucleus Shell or Orbit

Hydrogen has one proton, one electron and NO neutrons The Hydrogen Atom Hydrogen has one proton, one electron and NO neutrons Proton Electron

Helium has two electrons, two protons and two neutrons The Helium Atom Helium has two electrons, two protons and two neutrons Proton Electron Neutron

Sub-Atomic Particles 2 He 4 Particle Mass Charge Proton 1 Neutron Electron -1 ATOMIC NUMBER = number of PROTONS He 2 4 SYMBOL MASS NUMBER = number of PROTONS + number of NEUTRONS

The Helium Atom 2 He 4 Proton Electron Neutron Atomic Number 2 = 2 Protons 2 He 4 Atomic Mass 4 = 2 Protons + 2 Neutrons

The number of Protons is ALWAYS equal to the number of ELECTRONS # Protons = # Electrons The number of Protons is ALWAYS equal to the number of ELECTRONS Li 3 + Protons 3 - Electrons

Electron Orbit: Bohr Model Electrons have fixed orbit ‘shells’ The first shell can carry TWO electrons All other shells can carry EIGHT electrons at most

Valence Electrons Valence Electrons are located on the OUTERMOST Shell, and determine how REACTIVE an element is

The Atom Li - Lithium Li has 3 protons, 3 electrons, and 4 Neutrons

Boron has five protons, five electrons and six neutrons. The Atom B - Boron Boron has five protons, five electrons and six neutrons. Electrons Protons Neutrons

Carbon has six electrons, six protons and six neutrons. The Atom C - Carbon Carbon has six electrons, six protons and six neutrons. Electrons Protons Neutrons

The Atom N - Nitrogen Nitrogen has seven electrons, seven protons and seven neutrons. Electrons Protons Neutrons

The Atom O - Oxygen Oxygen has eight electrons, eight protons and eight neutrons. Electrons Protons Neutrons

The Atom Na - Sodium Sodium has eleven electrons, eleven protons and twelve neutrons. Electrons Protons Neutrons

How many protons, neutrons and electrons? 1 5 8 P = 5 N = 6 E = 5 P = 8 N = 8 E = 8 P = 1 N = 0 E = 1 H B O 1 11 16 92 11 17 P = 11 N = 12 E = 11 P = 92 N =146 E = 92 P = 17 N = 18 E = 17 Na Cl U 23 35 238

WORKSHEET TIME! Front Side Only 

This makes their MASS different. Isotope Atoms that have the same number of protons but different numbers of neutrons. This makes their MASS different.

Describe Isotope Example: http://education.jlab.org/glossary/isotope.html