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Final Chem part 3

Chapter $

Radiation deflected toward the positively charged plate Beta radiation
Atoms with the same number of protons but different numbers of neutrons isotopes
high energy radiation that has no change and no mass gamma ray
The smallest particle of an element that retains the properties of that element atom
the weighted average mass of an element's isotopes atom mass
the center-most part of an atom where the protons and neutrons are contained nucleus
Radiation deflected toward the negativley charged plate Alpha radiation
The rays and particles emitted by radioactive material radioactive
Equal to 1/12 the mass of a carbon-12 atom atomic mass unit
Ray of radiation traveling from the cathode to the anode cathode ray
Process 9not requiring energy) by which unstable nuclei lose energy radioactive decay
states that all matter is composed of atoms Dalton's atomic theory
process whereby some substances spontaneously emit radiation radioactivity
Compare and contrast Mass & atomic number atomic number is the number of protons and electrons in an element & mass number is the number of protons & neutrons
Compare and Contrast nuclear reaction & nuclear equation A nuclear reaction is a reaction that changes the nucleus & a nuclear equation is an equation that determines the mass of an atom
true or false~an atom's nucleus contains its protons and electrons False
true or false~Neutrons have no electrical charge True
true or false~beta particles have a charge of +2 False
true or false~An alpha particle consists of two protons and two electrons False
Created by: debitto456



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