Atomic Theory
The most modern model of the atom.
What is the cloud model?
This is located in the center of the atom and makes up almost all of the mass of the atom.
What is the nucleus?
The periodic table is organized in order of this number increasing.
What is the atomic number?
These types of elements are found on the left side of the staircase.
What are metals?
This is the family in group 1.
What is Alkali Metals.
An atomic model where atom is a positively charged sphere with electrons inside.
What is the plumb pudding or cookie model?
This subatomic particle has a neutral charge.
What is a neutron?
This tells you the number of valence electrons in an atom.
What is the group number?
These elements are found along the staircase.
What are metalloids?
What is the family in groups 3-12 of the periodic table?
What are transition metals?
The Bohr model improved on these two things from the plumb pudding model.
(What does the Bohr model have that the plumb pudding model does not?)
What is a central nucleus and energy levels?
These 2 subatomic particles are located inside the nucleus.
What are protons and neutrons?
This tells you the number of energy levels.
What is the period?
These elements are found on the right side of the staircase.
What are non-metals?
This family all has a full outer energy level, and are therefore the most stable.
What are noble gasses?
The progression of the atomic model shows this about scientific knowledge.
a. Scientific knowledge does not change.
b. Scientific knowledge relies on direct observations.
c. Scientific knowledge can change as new information is acquired.
What is c. Scientific knowledge can change as new information is acquired?
This is the number of protons, neutrons, and electrons in an atom with an atomic number of 50 and a mass of 119.
What is 50 protons, 69 neutrons, and 50 electrons?
This element has 5 valence electrons and 2 energy levels.
What is Nitrogen?
Ductility, being a good conductor, solid at room temperature, and malleable are all properties of this.
What is a metal?
This family is the most reactive metal.
What is Alkali Metals?
These are the 2 reasons the Bohr model is different from the electron cloud model.
What is the Bohr model has the electrons on a fixed orbit and the Electron Cloud model is 3-D?
This is why an atom has a neutral charge.
What is it has the same number of protons and electrons so they cancel each other out?
This element has 5 energy levels and 3 valence electrons.
What is In?
Brittle, high luster, and being a semi conductor are all properties of this.
What is a metalloid?
All the elements with similar properties to Be.
What are:
Mg, Ca, Sr, Ba, Ra?