Atomic Structure 7 Flashcards

Terms Definitions
aluminum
Al
2
S Sublevel
Rutherford
Gold Foild Experiment
has no change
nucleus
Electrons
Has a negative charge
protons
has a positive charge
Neutrons
Neutral, found in nucleus
Electron
a negatively charged subatomic particle found in the space outside the nucleus
Atomic # =
# of protons
Schrodinger
Developed mathematical equations to describe the motion of electrons in atoms. His work leads to the electron cloud model.
shells
Energy levels are also called energy______.
alpha particles
positively charged particle consisting of two protons and two nuetrons
5 bonds, 1 lone pair
square pyramidal
Fisson
The process of splitting atoms apart.
wavelength
distance between peaks of two successive waves
Neutron
A subatomic particle with no charge.
energy level
The principal, or first, quantum number is used to indicate the BLANK BLANK that the electron is found in.
Crystalline
The majority of ionic compounds are these
subatomic particles
particles inside an atom (protons, neutrons, electrons)
HIGHER
THE CLOSER ELECTRONS ARE TO THE NUCLEUS THE.....THE ATTRACTION IS
Robert Millikans experiment was
the oil drop experiment
Proton
a stable particle with positive charge equal to the negative charge of an electron
atom
the smallest particle of an element that retains its identity in a chemical reaction
Product
a chemical substance formed as a result of a chemical reaction
protons/neutrons
total number of these two particles determine the mass number
Isotopes
Atoms of the same element that have different numbers of neutrons and different mass numbers
atomic number
the number of protons an atom has
Mass Number
the total number of protons and neutrons in the nucleus of an atom
higher energy level, greater radius
a larger n means
orbital
a region of space around the nucleus where an electron is likely to be found
Proton and neutron
Two particles found in the nucleus
wave particle duality
electrons exhibit properties of both waves and particles
Chemical Equation
a shorthand way to use chemical symbols and numbers to describe a chemical reaction
Yield
The arrow in a chemical equation that points to the product
Chemical Bonds
Force that holds the atoms of elements together in a compound
Electron Cloud
A visual model of the most likely locations for electrons in a atom
atomic mass
total mass of the protons and neutrons in an atom, measured in atomic mass units
Electron Dot Diagram
Diagrams that are used to represent the structure of an atoms, primarily focusing on the number of valence electrons.
what does a base do
takes H+ away from solution
Isotope
atom of an element that has a number of neutrons different from that of other atoms of the same element
Element
A substance made up of only one kind of atom.
atomic mass unit
The BLANK BLANK BLANK (amu), which is represented with the symbol "u," is based on a particular isotope of carbon, called carbon-12.
ground state
state of least energy of a particle or system of particles
When does an atom becomes an ion
when atom gains an electron
What makes each element unique?
the number of protons; each element has its own specific number
What are the rules for assigning oxidation states?
*The highest rule takes precedence1 group 1 metals have oxidation states of +1 and group 2 of +22)Flourine has a -1 oxidation state3)Hydrogen has a +1 oxidation state4)Oxygen has a -2 oxidation state5)Halogens have a -1 oxidation state6)Group 16 atoms (oxygen family) have -2 oxidation state
What is conserved in all hadron interactions?
Q, B, S, charm, bottomness, and topness are conserved.
How do you figure out the mass of one atom if you have Avogadro's constant and the mass of a lump of material?
Mass (the whole material) / Na
Ammonium
NH4^+1
Thomson
discovered electrons
amu
atomic mass unit
No charge
Neutrons have
Cation
a positively charged ion
Positive charge
Protons have a
period
horizontal row of periodic table
intrinsic
is mass ext or int?
Outside the nucleus
Electrons are found
cloud
energy levels represent the most likely location for electrons in the ______
hypothesis
testable prediction to explain an observation
Neutron number
Mass # - atomic #
group
vertical column on the Periodic Table
group or family
vertical column of periodic table
valence electrons
electrons in the outermost energy level of an atom
Dalton
developed the first atomic theory of matter
ion
atom that has lost or gained electrons
periodic table
Arrangement of atoms by increasing atomic number.
Millikan
added the idea that electrons existed in energy levels
number of neutrons =
mass number - atomic number
1
neutrons have the mass of ___ a.m.u. They add mass to the atom
polyatomic ion
ions made of more than 1 atom
Average Atomic Mass
found on periodic table;
calculated by (mass x %)+(mass x %)
Net Charge
Number of Protons - Number of Electrons
nucleus
the tiny central core of an atom and is composed of protons and neutrons.
Ions
When an atom loses or gains one or more electrons, it acquires a net electrical charge
Lyman series
going from excited state to n=2 ( uv region)
to number?
bottom number?
top = mass number
bottom = atomic number
What makes one element different from another?
Elements are different because they contain different numbers of protons.
How can you describe the structure of the nuclear atom?
In the nuclear atom, the protons and neutrons are located in the nucleus. The electrons are distributed around the nucleus and occupy almost all the volume of the atom
/ 78
Term:
Definition:
Definition:

Leave a Comment ({[ getComments().length ]})

Comments ({[ getComments().length ]})

{[comment.username]}

{[ comment.comment ]}

View All {[ getComments().length ]} Comments
Ask a homework question - tutors are online