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RTE 1418 Week 1

RTE Week 1

QuestionAnswer
Has mass and occupies space measured in kilo's made up of atoms and molecules. Matter
Is the force used to do work can exist in several forms, measured in joules or electron volts Energy
States of matter Solid, liquid, gas
Energy forms Electrical, thermal, nuclear, electromagnetic, chemical, mechanical
Two or more substances combined Mixtures
Smallest particle of a simple substance The elements
Smallest particle of a complex substance The compound
Developed the periodic table of elements Mendeleev
Small, dense center. Contains the nucleons protons and neutrons Nucleus
Orbit the nucleus Electrons
Made up of quarks Protons and neutrons
Links quantum physics and relativity M theory (sting theory)
Positive charge Proton
Neutral charge Neutron
Negative charge Electron
Maintained through equal number of protons and electrons Electrical stability
Distinguishes elements by number of protons contained in nucleus Atomic number (Z#)
Z# Atomic number
change the Z# Change the element
The removal of an electron results in the ____ of the atom ionization
An ____ photon can interact with an electron and eject it from an atom X-ray
Concentrated in nucleus Atomic Mass
Mass of a ____ is 1836 times greater than an electron. Proton
Mass of a neutron is ___ times greater than an electron 1838
Atomic mass number A#
Neglects the mass of an atom's electrons Atomic mass number
Defines the location where an electron might be at any given time The orbital
Electron capacity 2(n)2
Shells K, L, M, N, O, P, Q
Unit: electron volts eV
Energy of one electron when accelerated by one volt Electron volts (eV)
Listed in ascending Z# order Periodic table of Elements
Periodic table: indicate elements have the same number of electrons shells Horizontal periods
Periodic table: have the same number of electrons in the outer (valence) shell Vertical groups
Chemical combing characteristic describes how an atom will bond with other atoms Valence
An atom never has more than eight electrons in its outer shell Octet rule
An atom with eight electrons in its outer shell is chemically stable (inert)
the ability to do work Energy
Physicist's definition of work work=force x distance
The action of physical movement Mechanical energy
Two types of mechanical energy Potential (stored) and kinetic
Energy released from a chemical reaction Chemical energy
Results from movement of molecules Heat Energy (thermal energy)
Results from the movement of electrons in a conductor Electrical energy
Obtained by breaking the bonds between the particles within a nucleus Nuclear energy
Combination of electric and magnetic fields traveling through space Electromagnetic Energy
Can travel through a medium or vacuum EM Radiation
Results from acceleration of a charge Electromagnetic energy
Characteristics of EM Radiation Wavelength, Energy, Frequency
Waves are disturbances in a medium Wave theory
Photon energy and frequency are directly related Particle theory
November 8, 1895 Wihelm Conrad Rontgen discovered x-ray
x-ray properties Penetrating, invisible form of EM radiation, Electrically neutral, releases heat when passing through matter
Scores of ionizing radiation ___ mrem per year 360 mrem
Natural radiation Cosmic, terrestrial, internally deposited
Man made radiation Medical, nuclear testing, power plants, consumer products
The atomic mass number of an atom is given by the number of protons plus neutrons
The atomic number is the number of protons
The number of protons in the nucleus is called the Atomic number
How many types of nucleons are there Two
Created by: Joker71
Popular Radiology sets

 

 



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