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29 terms

Chapter 17

<p>Highlighted words from chapter 17 science final review</p>
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Atom
the smallest particle of an element having the chemical properties of the element
Nucleus
the positively charged dense center of an atom
Proton
positively charged particle
Neutron
neutral particle of an atom
Electron
negatively charged particle
Quark
very small particles of matter that make up protons and neutrons
Electron cloud
a region around the nucleus of an atom where electrons are likely to be found
Atomic number
the number of protons in the nucleus of an atom
Isotope
Atoms of the same element but with different numbers of neutrons
Average atomic mass (amu)
weighted average of the atomic masses for the isotopes of an element
Periodic table
A chart of the elements showing the repeating pattern of their properties
Groups
vertical columns of the periodic table
Electron dot diagram
a model of an atom in which each dot represents an outer level electron
Period
a horizontal row of elements in the periodic table
Cl
The symbol for Chlorine is ____
8
The maximum amount of electrons in the second energy level of an atom is _____
Neutrons
Two isotopes of carbon are carbon-12 and carbon-14. These isotopes differ from one another by two ____
good
Metals are ____ conductors of heat and electricity
Mass number
The sum of the number of protons and neutrons in an atom is the _____
Iron
The symbol for ____ is Fe
Noble gases
A very stable outer energy level is characteristic for _____
Cloud models
Electron ____ are used to show how electrons in the outer energy level are bonded when elements combine to form compounds
Electron
The location of a _____ cannot be pinpointed exactly
Valence electrons
Dot diagrams are used to represent ____
Quarks
Particles that make up protons and neutrons are ____
name
A chemical symbol represents the ___ of an element
Periods
Horizontal rows on the periodic table are called _____
isotopes
Atoms of the same element with different numbers of neutrons are called ____
Tevatron
A ___ is used to accelerate protons in the study of subatomic particles