Chemistry Review Flashcards
chem key terms
Valence electrons
electrons in the outermost shell of an atom
Cations
ions when metals lose electrons
positive charge
Anions
non-metals when they gain electrons
negative charge
Ionic compounds
ionic bonding between metals and nonmetals
molecular compounds
nonmetals forming a covalent bond (sharing electrons)
covalent bond
sharing electrons
ionic bond
transfered electrons
Synthesis reaction
A + B -> AB
Decomposition reaction
AB -> A + B
Single displacement
A + BC -> AC + B
Double displacement
AB + CD -> AD + CB
Acid
molecular compounds that produce H+ in solutions
Anion
Ions that gained electrons
two nonmetals
Base
ionic compounds with low pH that produce OH-
Binary compound
a substance made of two different elements only
Catalyst
a substance that accelerates or causes a chemical reaction without getting charged
Coefficient
the number in front telling how many molecules are there
Compound
two or more elements chemically joined
Covalent bond
sharing electrons between two atoms
Dissociation
separation the ions in the compound to create a conductive substance
Diatomic molecule
molecules made up of two atoms
Ion
a charged atom
Ionic bond
transferring electrons between atoms
metal and nonmetal
Halogen
most reactive group
