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4C Chemistry

help studying for Unit 1

QuestionAnswer
Isotopes members of the same element that have the same # of protons and electrons but different # of electrons (hence, their mass # is different).
Radioisotopes decay over time by giving off radiation (particles).
Mass number atomic mass rounded to nearest whole number
Qualitative analysis observing changes in the physical or chemical qualities of a sample
Quantitative analysis measuring changes in the measured quantities of a sample (eg. mass, temperature, volume etc)
Diatomic elements elements that for a bond with themselves ("di" means 2). Hint: BrINCl HOF!)
Spectator ions aqueous ions that appear on both sides of an equation and so can be cancelled out
Polyatomic ions charged ions that are made up of more than one element
Synthesis reaction forms one product
Decomposition reaction has only one reactant
Combustion reaction always forms carbon dioxide and water
Solubility tables tells which ionic compounds would not dissolve in water
Precipitate an ionic compound that is insoluble (and there for solid)
Multivalent metals that can form more than one charged ion
States of Matter (solid, liquid or gas) depends on the temperature of the sample
Valence electrons are in the outermost electron shell and participate in chemical bonds
Lewis Dot diagram Shows the # of valence electrons (same as the Group #)
Ionic bond Force of attraction between oppositely charged ions
Created by: jcepella
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