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4 Atomic Structure

Early Models, Subatomic Particles,Periodic Table

What is the smallest particle of an element that keeps its chemical and physical properties? atom
The negatively charged subatomic particles are called_________. electrons
The small, positive, center of an atom is called the _________. nucleus
The positively charged particle located inside the nucleus is called the ________. protons
The subatomic particle without a charge and has a mass of 1amu is called the _________. neutron
The number of protons in the nucleus of an atom is called the __________. atomic number
The number of both protons and neutrons in the nucleus of an atom is called the __________. mass number
Atoms of elements that have different numbers of neutrons are called _________. isotopes
The mass of 1 proton or 1 neutron; 1/12 the mass of Carbon-12. atomic mass unit
The average mass of all the isotopes of an element based on the percent abundance. atomic mass
An arrangement of the elements shown in a table. periodic table
The vertical columns on the periodic table are called _________. groups (or families)
The horizontal rows on the periodic table are called _________. periods
A glowing beam of light produced when a cathode ray tube is connected to electricity. cathode ray
Created by: jpendleton



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