Structure of the Atom
Periodic Table
Properties of Elements
Families or Groups
Atomic Theory
100
It consists of a nucleus made of protons and neutrons surrounded by a cloud of electrons
What is the atom
100
Shorthand way of writing the name of an element
What is the chemical symbol
100
Can be predicted from an elements location on the periodic table
What is the element's properties?
100
Each one of the 18 columns on the periodic table
What is a family or group?
100
Used by scientists to explain and simplify the study of things that are too small to be seen
What is a model?
200
Its number can be calculated by subtracting the atomic number from the mass number.
What is the number of neutrons?
200
It is the criteria used to arrange the elements in the modern periodic table
What is the increasing atomic number?
200
Most reactive group of metals
What is the Alkali metals?
200
Most abundant group of elements
What is the metals?
200
In the modern model of the atom the nucleus is surrounded by this negatively charged particles
What is the electron?
300
Particles that are found in the atom's nucleus
What are the protons and neutrons?
300
Each of the 18 vertical columns in the periodic table
What is a group or family?
300
Two elements with the same number of protons but a different number of neutrons
What are isotopes?
300
Group of elements that do not react or form compounds
What is the Noble Gases.
300
The atom is rounded, soft, and uncuttable
What is Dalton's model of the atom?
400
The very small center of the atom
What is the nucleus?
400
The number of protons in the nucleus of an atom
What is the atomic number?
400
Element that is very important to the chemistry of life
What is Carbon?
400
Elements that conduct electricity better than nonmetals but not as good as a metal
What are metalloids?
400
Electrons travel in a fixed orbit around the nucleus like planets in the solar system
What is Bohr's model?
500
This element has 39 protons, 39 electrons and 50 neutrons
What is Ytrium?
500
The number of this subatomic particle is equal to the number of protons in an atom
What is the number of electrons?
500
Malleable, ductile, good conductors
What are the properties of metals?
500
Group of elements between 3 through12 that contains elements like Iron, Titanium and Copper
What is the transition metals?
500
Current atomic model that states that electrons do not follow fixed orbits but move around the nucleus very fast
What is the electron cloud model?
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