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Week 3

Introductory Chemistry

Fire,Water,Earth, Air 4 Fundamental Elements of Aristole
1.All Matter is Composed of indivisible particles called atoms 2.Atoms of a given element posses unique properties 3.Atoms of a given element possess unique properties and individual masses 4.Atoms combine in simple whole number ratios to form compound 5 different principles of Daltons Atomic Theory
opposites attract, even across distances like charges repel even across distances positives charges neutralizes negative charges Benjamin Franklin 3 principles that describe the behavior of electric charge
The # Protons present in a atom differentiattes element atoms What fundamentally identifies an atom as uniquely belonging to a particular element
electrically Neutral atoms with the same # of protons
By definition an ion has a different numbers of electrons and protons. What is the relationship between the number of protons and the number of electrons in an ion?
The atom will be found as an ion possessing a negative charge. What is the consequence in terms of electric charge for an atom that has more electrons than protons?
The atom will be found as an ion possessing a positive charge. How about if there are more protons than electrons?
The atomic number represents the number of protons in the atom and specifies thye element type. Mass What’s the difference between mass number and atomic number?
which has lost or gained one or more electrons, making it positively or negatively charged. What is an ion?
The number of Protons or the positive charge held in the nucleus. What quantity is represented by the sequential numbers on the periodic table?
An atom having the same atomic number but differing mass number from What is an isotope?
An s orbital has the fewest electrons with only one orbital (2 electrons) it is spherical in shape. What is the shape of the subshell that contains the fewest electrons?
Electrons present in the outer most principle energy level. Specifically electrons present in the s and p By definition what are valence electrons?
is based on assigning the ass of a single carbon -12 atom The atomic mass scale
the fraction of the total # of element atoms present taht is composed of a specific isotope What is Fractional Abundance
Created by: jadenite