Element proton neutron and electron
[DOC File]STUDY GUIDE: BASIC CHEMISTRY
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The mass of each proton and each neutron is approximately equal to one atomic mass unit. An electron is much less massive than a proton or a neutron. (3.1f) The number of protons in an atom (atomic number) identifies the element. The sum of the protons and neutrons in an atom (mass number) identifies an isotope.
[DOC File]Rubric/Grading Sheet for Atom Model
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In fact, a neutron breaks down into an extra proton which remains in the nucleus and an electron which is given off. Beta particles are of medium size and move at a medium speed. Beta particles are slightly more dangerous than alpha particles, but they can be stopped by …
[DOC File]ELECTRON ARRANGEMENT WORKSHEET
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1. Describe atomic structure using the terms proton, neutron, electron, mass number and orbital. Indicate what is meant by electrons in an "excited state" and those in a "ground state" 2. Explain what an isotope is and give two important physical properties of isotopes that make them useful in biological research. Define half-life. 3.
[DOCX File]1.2.1.A Electron Theory
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This allows a neutron to decay into a proton, an electron and a neutrino. If this were not the case, and the mass of the neutron was exactly equal to the combined masses of the proton and electron, then all the protons and electrons of the primeval universe would simply have combined into stable neutrons.
[DOC File]THE ELECTRON
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2 atoms of the same element that have different masses (different amounts of neutrons) ion: charged particle (number of protons ≠ number of electrons) proton: positively charged subatomic particle found in the nucleus. neutron: neutral subatomic particle found in the nucleus. electron: negatively charged subatomic particle found in the ...
[DOC File]Protons, Neutrons, and Electrons Practice Worksheet
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Proton, electron, neutron What are some of the characteristic of an element that makes it a good conductor? An element with free electrons makes a good conductor.
Unit 2 Exam PRACTICE: Atomic Structure and the Periodic ...
REMEMBER – no flat posters – all subatomic particles (proton, neutron, electron) must be 3-D . The model must not be larger than a shoe box. It must not be smaller than a 12 pack box of crayons. *All atoms will be shown and presented to the class. Rubric/Grading Sheet for Atom Model
[DOCX File]Protons, Neutrons, and Electrons Practice Worksheet
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Name of the element Atomic. symbol Metal/metalloid/nonmetal Atomic. number Protons Electrons Neutrons Atomic. mass Boron B Metalloid 5 11 Sodium Na Metal 11 23 Gallium Ga Metal 31 68 Yttrium Y Metal 39 89 Copper Cu Metal 29 64 Technetium Tc Metal 43 98 Lead Pb Metal 82 207 Ytterbium Yb Metal 70 173 Actinium Ac Metal 89 227 Molybdenum
2.1 Electrons, Protons, Neutrons, and Atoms – Physical Geology
Protons, Neutrons, and Electrons Practice Worksheet. Calculating the number of each particle in an atom: # Protons = Atomic Number # Electrons = Protons
[DOCX File]Honors Atomic Class Packet Unit 3
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a. add or remove a neutron b. add or remove a proton c. add or remove a valence electron d. add or remoe an ion ____ 9. Two atoms are examined. Their nuclei have the same number of protons, but one nucleus has one more neutron than the other. These atoms represent:
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