CHEM 120 Exam 1 Study Guide
(Chapters 1, 2, and 3)
Terms you should know (which includes: to define, give examples of and/or perform calculations with
(if it’s the case))
From Chapter 1: Matter, Measurement and Problem Solving
chemistry theory scientific law matter
mass energy substance extensive property
mixture heterogeneous homogeneous intensive property
physical state gas liquid solid
crystalline amorphous physical property chemical property
chemical change physical change accuracy precision
random error systematic error length volume
density mass temperature exact number
inexact number significant figures Celsius Fahrenheit
Kelvin gram liter meter
Giga Mega kilo centi
milli micro nano pico
From Chapter 2: Atoms and Elements
conservation of mass definite proportions chemical symbol atomic theory
atom molecule ion cation
anion diatomic molecule proton neutron
electron nucleus atomic number (Z) mass number (A)
isotope atomic mass periodic law periodic table
group period main group metals
non-metals transition metals alkali metals alkaline earth metals
halogens noble gases mole Avogardro’s number
mass (grams) molar mass (g/mol) atomic mass unit (amu)
From Chapter 3: Molecules, Compounds and Chemical Equations
1
, ionic bond covalent bond chemical formula empirical formula
molecular formula structural formula ball-and-stick molecular model
space-filling molecular model atomic element molecular element
molecular compound ionic compound formula unit polyatomic ion
common name systematic name binary compound formula mass
mass percent composition molar mass chemical reaction
combustion reaction chemical equation reactants products
balanced chemical equation
2
(Chapters 1, 2, and 3)
Terms you should know (which includes: to define, give examples of and/or perform calculations with
(if it’s the case))
From Chapter 1: Matter, Measurement and Problem Solving
chemistry theory scientific law matter
mass energy substance extensive property
mixture heterogeneous homogeneous intensive property
physical state gas liquid solid
crystalline amorphous physical property chemical property
chemical change physical change accuracy precision
random error systematic error length volume
density mass temperature exact number
inexact number significant figures Celsius Fahrenheit
Kelvin gram liter meter
Giga Mega kilo centi
milli micro nano pico
From Chapter 2: Atoms and Elements
conservation of mass definite proportions chemical symbol atomic theory
atom molecule ion cation
anion diatomic molecule proton neutron
electron nucleus atomic number (Z) mass number (A)
isotope atomic mass periodic law periodic table
group period main group metals
non-metals transition metals alkali metals alkaline earth metals
halogens noble gases mole Avogardro’s number
mass (grams) molar mass (g/mol) atomic mass unit (amu)
From Chapter 3: Molecules, Compounds and Chemical Equations
1
, ionic bond covalent bond chemical formula empirical formula
molecular formula structural formula ball-and-stick molecular model
space-filling molecular model atomic element molecular element
molecular compound ionic compound formula unit polyatomic ion
common name systematic name binary compound formula mass
mass percent composition molar mass chemical reaction
combustion reaction chemical equation reactants products
balanced chemical equation
2
