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Chapter 17 Study

Lessons 1, 2, and 3

QuestionAnswer
Atom The smallest piece of matter that still retains the property of the element.
Nuvleus Protons and neutrons are found in a small, positively charged center of the atom.
Protons Particles with an electrical charge of a positive.
Neutrons Neutral particles that do not have an electrical charge.
Electrons Particles with an electrical charge of a negative.
Quarks Protons and neutrons are made up of smaller particles.
Electron Cloud The area around the nucleus of an atom where its electrons are most likely found.
Atomic Number The number of protons in an atom is equal to a number.
Mass Number The sum of the number of protons and the number of neutrons in the nucleus of an atom.
Isotopes Atoms of the same element that have different numbers of neutrons.
Average Atomic Mass The weighted-average mass of the mixture of its isotopes.
Periodic Table The elements are arranged by increasing atomic number and by changes in physical and chemical properties.
Group The vertical columns in the periodic table.
Electron Dot Diagram Uses the symbol of the element and dots to represent the electrons in the outer energy level.
Period The horizontal rows of elements on the periodic table.
Created by: caseygoodman
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