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Science chapter 16

QuestionAnswer
Chemical symbol letters used to represent an element
atom smallest particle of an element that has the properties of that element
Model Used to explain something that is difficult to visualize
Nucleus Central core of an atom
Proton Positive charged particles
Electron Negative charged particles
Neutron Particles with no charge
Electron cloud Area around the nucleus of an atom where electrons are found
Atomic number The number of protons in the nucleus
Mass number Sum of the protons and neutrons in an atom
Isotopes Atoms of the same element with different number of neutrons
Average atomic mass Weighted average mass of the mixture of its isotopes
Periodic table Chart showing elements arranged by increasing atomic number and changing properties
Group Vertical columns on the periodic table
Electrons dot diagram. Symbol of the elements and dots to represent the electron in the outer energy level
Period Horizontal role of elements on the diagram table
Metal Shiny and good conductors
Nonmetal Dull and brittle or gas
Metalloid Properties of both metal and nonmetal
Noble gas Group 18
Transition metal Group 3-12
Level 1 2 electrons
Level 2 8 electrons
Level3 18 electrons
Level 4 32 electrons
What are the 6 quarks? Up, down, charm, strange, top, and bottom
Created by: user-2059962
 

 



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