Periodic Table
Thermal Energy
Who's Who?
Masses of Atoms
Structure of the Atom
100
an arrangement of the elements by increasing atomic number and by changes in physical and chemical properties.
What is the periodic table
100
the transfer of thermal energy by collisions between particles in matter
What is conduction
100
A Danish physicist that hypothesized that electrons travel in fixed orbits around the nucleus of the atom and that outer orbits in an atom could hold more electrons than the inner orbits.
Who is Neil's Bohr
100
the smallest piece of matter that still has the properties of the element
What is an atom
100
particle with an electrical charge of 1-
What is an electron
200
Na on the periodic table
What is Sodium
200
transfer of thermal energy in a fluid by the movement of fluid from place to place
What is convection
200
His model of the atom was a solid sphere. He agreed that all matter was created by atoms, which he believed were indestructible. He stated that compounds are created by combining two atoms and that all atoms of given elements are identical in their mass and properties.
Who is John Dalton
200
a number equal to the number of protons in an atom
What is atomic number
200
particle with no charge
What is a neutron
300
a vertical column of elements on the periodic table
What is a group
300
a measure of the average value of the kinetic energy of the particles in an object
What is temperature
300
He discovered the electron. His model looked like a ball of chocolate chip cookie dough.
Who is J.J. Thomson
300
the weighted average mass of the mixture of isotopes of an element
What is the average atomic mass
300
the small, positively charged center of the atom
What is the nucleus
400
a horizontal row of elements on the periodic table
What is a period
400
an explanation of how particles behave and move
What is kinetic theory
400
He thought that almost all the mass of an atom and all its positive charge were concentrated in the nucleus of an atom and that the nucleus of an atom was surrounded by electrons. He used the gold foil experiment to discover the modern model of an atom.
Who is Ernest Rutherford
400
atoms of the same element that have different numbers of neutrons
What is isotopes
400
particle with an electrical charge of 1+
What is a proton
500
the symbol of an element with dots representing the number of electrons in the outer energy level
What is an electron dot diagram
500
the sum of the kinetic and potential energy of all the molecules in an object
What is thermal energy
500
Created the periodic table of elements
Who is Mendeleev
500
the sum of the number of protons and the number of neutrons in an atom
What is the mass number
500
the area around the nucleus of an atom where its electrons are most likely found
What is an electron cloud
M
e
n
u