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'21 Chem Final pg 2

QuestionAnswer
Cation groups Groups 1A, 2A, 3A
Anion groups Groups 5A, 6A, 7A
ion with positive charge cation
ion with negative charge anion
change in number of neutrons isotope
change in number of electrons ion
change in number of protons different element
starting material in chemical reaction (left side) reactant
get made in chemical reaction (right side) products
speed up chemical reaction (placed above arrow) catalyst
numbers placed in front to balance equation coefficient
small numbers to the right that are NEVER changed to balance equation subscript
states that mass is not created or destroyed law of conservation of mass
equation that is not balanced skeleton
6.02 x 10^23 representative particles Avogadro's number
volume of 1 mole of any gas at STP conditions 22.4 Liters
is 0 to 6 on pH scale Acids
is 8 to 14 on pH scale Bases
is 7 on pH scale Neutral substances
SI unit for amount of substance mole
no prefixes Naming of ionic compounds
use prefixes Naming of covalent compounds
happens to valence electrons in ionic compounds Transfer electrons
happens to valence electrons in covalent compounds Share electrons
means 2 atoms diatomic
means 1 atom monatomic
means 4 atoms tetratomic
means 8 atoms octatomic
formula written using the lowest whole number ratio empirical formula
is conserved in chemical reactions mass and number of atoms
amount of time it takes for a radioactive sample to decay by 50% half-life
A + B --> AB synthesis reaction
AB --> A + B decomposition reaction
AB + C --> CB + A single replacement reaction
AB + CD --> AD + CB double replacement reaction
CxHy + O2 --> CO2 + H2O combustion reaction
Created by: cadetjt
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