Chemistry in the Community vocabulary review for the Final Exam
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Across
No charge/neutral charge particle in an atom
Used to describe an atom's ability to chemically bond with another atom
Number before a formula that tells you the number of molecules of that substance
The number of electrons that can fit in the first energy level of the atom, closest to the nucleus
All the elements in this have the same number of energy levels
(2 words) the total mass of the protons and neutrons in an atom
(2 words) a graphic organizer of all the known elements in the universe
Elements found on the right side of the periodic table
Electrons that are in the outermost energy level of an atom
The group with the most stable elements, that will not form bonds with other elements
Cannot be broken down into a simpler substance and keep its chemical properties
All the atoms in these have the same number of valence electrons and similar chemical properties
The basic unit of a chemical element
Down
Elements in the same group have similar chemical ___________
A tiny number to the right and under a symbol that tells you how many atoms of an element there are in a formula
The group in the periodic table that contain the most reactive elements
Tells you how many protons an atom has; tells you where the element is on a periodic table
Shown as part of a formula, with a subscript number on the right. Tells you how many molecules there are of that substance in the formula. You multiply the number of atoms inside by the subscript number on the right of it to get the total number of atoms in the molecule inside it.
A capital letter, or a combination of a capital and lower case letter, that represents an element
Represents a molecule, can contain coefficients, subscripts, and parentheses
Shares characteristics with metals and nonmetals
In the center of the atom, where protons and neutrons are located
Negatively charged particle in an atom
Elements found on the left side of the periodic table
The number of valence electrons that will make an atom stable (except for hydrogen and helium)
Positively charged particle in an atom
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