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2017 Final Review

Review for Chemistry Final Exam

elements are arranged this way on the current periodic table increasing atomic number
atomic mass - atomic number finds this neutrons
number of valence electrons equals this group number
these subatomic particles are found in the nucleus protons + neutrons
these subatomic particles must be equal if atom is neutral protons + electrons
change in number of protons different element
change in number of neutrons isotope
change in number of electrons ion
innermost electrons are called this core
outermost electrons are called this valence
majority of elements on periodic table are this metals
Cations are found where on the periodic table 1A, 2A, 3A (+ d and f blocks)
Anions are found where on the periodic table 5A, 6A, 7A
Type of chemical reaction: AB --> A + B decomposition
Type of chemical reaction: A + B --> A + B combination (synthesis)
Type of chemical reaction: AB + CD --> AD + CB double replacement
Type of chemical reaction: AB + C --> CB + A (sometimes) single replacement
Compound made by a transfer of valence electrons ionic
Compound made by sharing of valence electrons covalent
How are ionic compounds named? criss cross but never use prefixes
How are covalent compounds named? always use prefixes but never "mono" on 1st anion
most electronegative element + its trend F (up and right)
atomic mass is the sum of ________ & __________ protons + neutrons
what element is the exception in group 1A (1) H , not a metal
what element is the exception in group 8A (18) He, stable with 2 valence electrons
2 parts of an ionic compound cation (metal) + anion (nonmetal)
2 parts of a covalent compound anion (nonmetal) + anion (nonmetal)
subatomic particle with positive charge proton
subatomic particle with negative charge electron
subatomic particle with no charge neutron
study of matter and the changes it goes through chemistry
horizontal rows on the periodic table (7) periods
vertical columns on the periodic table (18) groups/families
SI unit for length meters (m)
SI unit for mass kilograms (kg)
Rule that says that atoms of elements become stable with 8 valence electrons octet
is conserved in every chemical reaction molar mass + # of atoms
numbers that are never changed to balance a chemical equation subscripts
numbers that are added to balance a chemical equation coefficients
chemical equation that is not balanced skeleton
formula that uses the lowest whole number ratios empirical
elements were arranged this way on the first periodic table increasing atomic mass
last 2 things done after experiment is over clean up + wash hands
Type of Chemical Reaction: CxHy + O2 --> CO2 + H2O Combustion
273 K ( or O C) AND 101.3 kPa ( or 1 atm) STP conditions
Non-SI unit for volume Liter
SI unit for amount of substance mole
(6.02 x 10^23 ) # of representative particles Avogadro's number
Volume of 1 mole of any gas at STP conditions 22.4 Liters
Movement of particles from high concentration to low concentration diffusion
Created by: cadetjt