Chapter 2- Introduction to Atoms 8th Grade Science Chapter 2- Introduction to Atoms © Fall 2005, Pflugerville ISD, 8th Grade Chapter 2- Introduction to Atoms 8th Grade Science Chapter 2- Introduction to Atoms PISD PowerPoint Lessons Developed By Ryan Gross, Park Crest Middle School Edited By ...
O Oxygen Periodic Table 8 16 Atomic Number: Number of protons and it is also the number of electrons in an atom of an element. 8 O Element’s Symbol: An abbreviation for the element. Oxygen Elements Name Atomic Mass/Weight: Number of protons + neutrons. 16 2/16/2019 Dr Seemal Jelani...
Project2061:StudentAssessment1TheeffectoftemperatureonatomsItemformat:Whathappenstothe[]oftheatomsofasubstancewhenthetemperatureisincreased?A.The[]increasesB.The[]decreasesC.The[]staysthesamewhere[]is1.Distancebetween2.Speed3.Number4.Size5.MassProject2061:StudentAssessment2%correctvs.grade The%of“notsure...
The number of Protons are what make each element unique!! example: only oxygen has 8 protons and all oxygen's have 8 Example: only Boron has 5 protons and all boron's have 5 B 5 10.81 Anatomy of the Box… Boron Atomic Number Symbol Atomic Mass Element Name Atomic Mass B Boron The a...
electrons are shared between atoms to form a covalent bond in order that each atom in the compound has a share in the number of electrons required to provide a stable, Noble Gas, electronic configuration (octet rule). Each atom “thinks” it has a full outer shell containing 8 valence elec...
The periodic table is an arrangement of all the elements in order of increasing atomic number Each element on the periodic table has specific properties and information Chemical symbol All start with a capital letter. NO EXCEPTIONS If there is a two letter symbol, the second letter is ALWAYS lo...
Section 1: “The Development of the Atomic Theory” The atom is the smallest unit of all matter. Section 1: “The Development of the Atomic Theory” Who: Democritis When: 4th century B.C. What: Suggested that the universe was made of indivisible units. He called these units atoms. “A...
It starts with MATTER Matter is the “stuff” that everything is made of. It starts with MATTER Matter = Substance = Chemical Matter is the “stuff” that everything is made of. Matter = Substance = Chemical It starts with MATTER Matter is the “stuff” that everything is made of. Mat...
Elements & Atoms Dalton Model – atoms are like smooth, hard balls that could not be broken into smaller pieces. (See p. 8 – Summary of Dalton’s Ideas) Solid Sphere Model or Billiard Ball Model proposed by John Dalton Elements & Atoms Thomson Model – atoms have negatively charged electr...
Atoms The building blocks of Matter Consists of Protons (+), Electrons (-), and Neutrons (N). Elements Consists of only one kind of atom, Cannot be broken down into a simpler type of matter by either physical or chemical means Can exist as either atoms or molecules. Flocabulary ...