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4 Atomic Structure

Early Models, Subatomic Particles,Periodic Table

QuestionAnswer
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