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Ch. 5 notes
Ch. 5 notes

... particles called atoms (atomos) ‘indivisible’ – Hypothesized without using experiments ...
The Nuclear Atom
The Nuclear Atom

... Democritus (460 B.C. – 370 B.C.) • first to suggest the existence of “atoms” ...
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At. Theory Timeline - Advanced Placement Chemistry

Chemistry Final Study Guide
Chemistry Final Study Guide

... Particles in gases are completely free to move and are always in motion. ...
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Properties of Metals vs. Nonmetals vs. Metalloids

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...  The number of protons in an atom determines the element # of protons = atomic number  this also tells you # of electrons ...
Proton Positively charged subatomic (smaller than an atom) particle
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... atom) particle found orbiting the nucleus. Atomic Number- Represents the number of protons, which determines the element type. ...
Ch. 2 - Ltcconline.net
Ch. 2 - Ltcconline.net

... C. Elements combine to form compounds - 2 or more elements in fixed ratio 1. table salt is NaCl; iodized (fig. 2.4) 2. Water D Atoms consist of protons, neutrons and electrons 1. atom is the smallest unit of matter 2. subatomic particles make up the atom. 3. Differences in elements 4. isotopes - dif ...
ionic and covalent bonds
ionic and covalent bonds

... BONDS OBJECTIVE: To learn the different types of chemical bonds. ...
bonding notes for votech
bonding notes for votech

... Melting and boiling points are lower than those of ionic compounds  Many are gases at room temperature  If in the solid form, molecules are soft or ...
What is Everything Made Of?
What is Everything Made Of?

... How Big is It, (Are They)? 1 Proton ( or Neutron)----1.67 x10-24 Grams =0.000000000000000000000001.67 Grams 1 electron-----9.1x10-28 Grams =0.0000000000000000000000000009.1Grams The Proton weighs 1800 x the Electron The Atom is about 5 X 10-8 Cm ...
Chapter 2 - Faculty Web Pages
Chapter 2 - Faculty Web Pages

Classifying Matter and the Periodic Table
Classifying Matter and the Periodic Table

... Dalton’s atomic theory of matter • each element is composed of extremely small particles called atoms • all atoms of a given element are identical, but they differ from those of other any other element ...
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... How many protons does Calcium have? What element has 17 protons and 18 neutrons? What is its atomic number? What is its atomic mass? ...
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ChemicalBondingTestAnswers

... Dispersion forces are referred to as Vander Waals forces. 10. Substance IV is most likely to be an ionic compound as – it is solid in pure state, is highly soluble in water and has high solution conductivity. 11. HF and NH3 12. There are thousands of compounds that are uncommon or have multiple name ...
Atomic Theory - WaylandHighSchoolChemistry
Atomic Theory - WaylandHighSchoolChemistry

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The ocean is a mixture.
The ocean is a mixture.

... another and to other metals, but their properties do not fit in with those of any other family. Many transition metals combine chemically with oxygen to form compounds called oxides. They have one or two electrons in the outer level Reactivity: less reactive than alkaline-earth metals Properties: Sh ...
Types of Chemical Reactions
Types of Chemical Reactions

... general form of: A + BC → AC + B 5) Double Replacement: This is when the metals and nonmetals of two different molecules switch places, forming two entirely different compounds. These reactions are in the general form: ...
Review Chemistry KEY - cms16-17
Review Chemistry KEY - cms16-17

Atom Study Guide
Atom Study Guide

... You need to know the five people that we talked about and their contribution the development of the atom. ...
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What is the source of energy in nuclear reactors? D. Indumathi, The

... The atomic nucleus To understand nuclear power, we must first understand the atom. We know that atoms are formed by a central nucleus surrounded by negatively charged electrons. The nucleus contains positively charged protons and electrically neutral neutrons. There are as many protons in the nucleu ...
Biol 1441
Biol 1441

... Two atoms are so unequal in their attraction for valence electrons that the more electronegative atom strips an electron completely away from its partner. Ion: a charged atom (or molecule) Cation: a positive ion Anion: a negative ion The transfer of an electron is not the formation of a bond; rather ...
Atoms and Atomic Theory
Atoms and Atomic Theory

... 1. All elements are composed of atoms and they are indestructible-like a solid sphere. They cannot be created or destroyed-LAW ...
Unit #3 - Wikispaces
Unit #3 - Wikispaces

... 9) Rutherford's Atomic Theorya) Ernest Rutherford (1871 - 1937 = 66 yrs. old). English physicist. b) Rutherford's experiment concluded that most of the atom must consist of space without the nucleus. The nucleus must occupy a very, very, small portion of the volume of an atom. This nucleus contains ...
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Unbinilium

Unbinilium /uːnbaɪˈnɪliəm/, also known as eka-radium or simply element 120, is the temporary, systematic element name of a hypothetical chemical element in the periodic table with the temporary symbol Ubn and the atomic number 120. Unbinilium and Ubn are the temporary systematic IUPAC name and symbol, until a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkaline earth metal, and the second element in the eighth period.To date, all attempts to synthesize this element have been unsuccessful. Its position as the seventh alkaline earth metal suggests that it would have similar properties to the alkaline earth metals, beryllium, magnesium, calcium, strontium, barium, and radium; however, relativistic effects may cause some of its properties to differ from those expected from a straight application of periodic trends. For example, unbinilium is expected to be less reactive than barium and radium and be closer in behavior to strontium, and while it should show the characteristic +2 oxidation state of the alkaline earth metals, it is also predicted to show the +4 oxidation state unknown in any other alkaline earth metal.
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