Atoms
Models of atoms
Periodic table II
Periodic Table
Atom II
100
The smallest particle of an element
An atom
100
This atomic theory stated that atoms were like smooth, hard spheres the could not be broken into smaller pieces.
Daltons Atomic Theory
100
Metals are located where on the periodic table?
To the left of the staircase
100
elements On the Periodic Table are placed in __________________ or families in which they have similar chemical properties.
Groups
100
What does the Greek word "atomos" mean in English.
uncuttable
200
This is the very small, dense center of an atom.
The Nucleus
200
This atomic theory, also called the "Plum Pudding model" stated the electrons were scattered throughout a ball of positive charge.
J.J. Thompson's atomic model
200
Nonmetals are located where on the periodic table?
To the right of the stair case
200
This number tells you the number of protons in the nucleus of every atom of an element.
Atomic Number
200
Letter A in the figure is the atomic number, this tells you the number of what in the atom?
The number of protons
300
These two particles make up the nucleus of an atom.
Protons and neutrons
300
The gold foil experiment helped determine this model which stated that an atom is mostly open space with a dense nucleus at the center.
Rutherford's atomic model
300
These are the rows of the periodic table and the properties of the elements in these rows change as you move from left to right.
Periods
300
Iodine (atomic number 53) belongs in which family?
Halogen family
300
What are the charges of the particles that make up an atom?
Protons - positive
Neutron - Neutral
Electrons - negative
400
What are the three particles found in an atom?
Protons, Neutrons, and electrons
400
In this model electrons are found only in specific orbits around the nucleus much like planets orbit around the sun.
Bohr's atomic model
400
Metalloids are located where on the periodic table?
On the staircase
400
One of the first Periodic Tables was constructed by Dmitri Mendeleev, He arranged the elements by increasing ______________________.
Atomic mass
400
This type of molecule is made up of only two atoms.
Diatomic molecule
500
What two particles in an atom are equal in number.
electrons and protons
500
In this model electrons are found in a "cloud" around a positively charged nucleus.
The Cloud Model
500
Sulfur (atomic number 16) belongs in which family (group)?
oxygen family
500
Letter D is the mass number of an element that tells you the average mass of the isotopes of the element. It also tells you the number of ____________ and ____________ in the nucleus of the atom
protons and neutrons
500
These are atoms with the same number of protons but different numbers of neutrons.
Isotope(s)