We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byAidan Long
Modified over 4 years ago
Atoms and the Periodic TableChapter 17 Mrs. Chilton
Atoms Elements are made of particles called atomsAtoms are the smallest pieces of matter that contain all the properties of a specific element Each element contains only one type of atom
Essential Question How do we know what the atom looks like when no one has ever seen it?
Inside the Atom Atoms are made up of smaller particlesThese particles are found in different regions of the atom
Protons Positively charged particles found in nucleus of atomHave an electrical charge of +1 Mass of 1 a.m.u. Composed of quarks
Neutrons Neutral particles found in nucleus of atomHave no electrical charge Mass of 1 a.m.u. Composed of quarks
Nucleus The nucleus is the positively charged dense core in the center of the atom Contains 99.9% of mass of atom Houses protons and neutrons
Electrons Negatively charged particles found in electron cloudHave an electrical charge of -1 Constantly moving around outside nucleus Have essentially no mass
Electron Cloud Region around nucleus Houses electrons
Time to Make a Foldable!
Time to Make a Foldable!
Atomic Models Have been revised many times to explain new discoveriesDemocritus (4th century B.C.) thought the atom could not be split Theory was modified when subatomic particles were discovered
Newer Models Bohr’s Model (1913) revised earlier thoughtsShowed electrons moving in paths like planets Revised in 1925 Now electrons in cloud
Valence Electrons Electrons in the outermost energy level of an electron are called valence electrons These are the electrons furthest from the nucleus
Symbols Elements are listed by their chemical symbolsSymbols are usually either one capital letter like C for Carbon, or one capital and one lowercase letter like Ne for Neon
Periodic Table The periodic table gives much information we need to learn more about the atom of each element
Atomic Number Atomic number = # of protons in an atomWhole number shown on periodic table Periodic table is arranged by atomic number
Atomic Mass Mass # = # p+ + # n0The average atomic mass is the number at the bottom of this square Found by averaging the natural abundances of its isotopes Mass # = # p+ + # n0
Concept Map Complete this concept map:
Atom Math Atomic Number Symbol Element Name Atomic Mass
Atom Math Protons Electrons Protons Neutrons
Practice # n0 = Mass # - Atomic # Zn Oxygen Lithium 8 30 3 15.99965.39 6.941 8 30 3 35 8 4 8 30 3 # n0 = Mass # - Atomic #
Atoms Chapter 2, Section 1.
I. Subatomic Particles (p )
$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300.
Structure of an Atom.
I love science, Ms. Solari!
Chapter 5 Sections 2 and 3 Structure of an atom nucleus- center of an atom -discovered by Ernest Rutherford in 1911 proton (p+) -positively charged subatomic.
Atomic Structure Nucleus – contains protons and neutrons
Structure of an Atom. What Is an Atom? An atom is often referred to as the building block of matter. Atoms have a nucleus surrounded by an electron cloud.
The Periodic Table. Define the following terms. 1. proton 2. neutron 3. electron 4. nucleus.
Subatomic Particles and Isotopes. Subatomic Particles Protons- Positively Charged Protons- Positively Charged Located in the nucleus Located in the nucleus.
Ch. 17 – Properties of Atoms and the Periodic Table
Components of the Atom Nucleus: Nuclear Forces:
17.1: STRUCTURE OF THE ATOM PS- 2.1 COMPARE THE SUBATOMIC PARTICLES OF AN ATOM WITH REGARD TO MASS, LOCATION, AND CHARGE, AND EXPLAIN HOW THESE PARTICLES.
Atomic Structure and the Periodic Table
P. Sci. Unit 8 Chapter 4 Atoms.
Atoms. Particles of an Atom Atom: smallest amount of an element ParticleRelative Mass ChargeLocationOther Info Proton nucleusIdentifies the element.
THE STRUCTURE OF ATOMS Pg. 43. Daily science- pg. 40 Who discovered the neutron? Electron? Nucleus? What did Democritus theorize? Name two differences.
© 2018 SlidePlayer.com Inc. All rights reserved.