periodic table Jacob Cheatum Flashcards
(27 cards)
What is a proton
A particle with a positive charge .
What is the nucleus ?
It is the most important and center of the elements .
What is a neutron ?
A particle without a electric charge .
What is a electron ?
A particle with a negative charge .
What is orbital ?
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What is a orbital?
It is the equal or actual pattern of electron density .
What is a valence electron ?
Are electrons that are in the outermost shell.
What is a metal ?
A metal is a hard or shiny element found on the periodic table .
What is a period ?
A period is a side to side area where the elements are on the table .
What is a group ?
A group is the up and down arrangement of elements on the periodic table .
What is a nonmetal ?
A non metal is a element that does not contain metal characteristics.
What is a semiconductor ?
A semiconductor is a element that conducts heat or electricity more effectively than a normal insulator , but not as well as a conductor .
What is a alkali metal ?
It is a metal that is very reactive .
What is a alkali earth metal ?
They are elements in group 2 .
What are transition metals ?
They are metals that have a central block and can be used to make coordinate compounds .
What are halogens ?
They are reactive non metals and are very acidic .
What are noble gases ?
They are very unreactive elements .
What are ions ?
A ion has a net charge due to a added proton neutron or electron .
What is a atomic number ?
A atomic number is what tells you the protons and electrons .
What is the mass number ?
The mass number tells you the mass of the atom which can also be used to find the neutrons .
What is a isotope ?
Is two or more of the same element , but have different amounts of neutrons .
What is the atomic mass unit ?
AMU
What is average atomic mass ?
It is when the masses of all isotopes of s element are added by the natural abundance .
What is molar mass ?
It is when the atomic mass is rounded to the nearest hundredth .
