CHM 1020 Exam 1
Matter - answer any solid, liquid, gas, or plasma that occupies a space and has mass
homogeneous mixture - answer mixture that is uniform throughout (solution)
heterogeneous mixture - answer mixture that is not uniform throughout
atoms - answer smallest unit of an element
element - answer many atoms of the same type; most basic building blocks
compounds - answer different elements bonded together (pure substance)
chemical symbols - answer one or two letter abbreviation for elements (atomic symbols)
group - answer vertical columns on periodic table; organized by common properties
Group 1 - answer alkali metals
Group 2 - answeralkaline earth metals
Group 17 - answerhalogens
Group 18 - answernoble gases (least likely to react)
chemical formula - answerelementary composition of a substance; consists of elements
and atomic ratio (subscripts)
molecule - answertwo or more atoms held together by chemical bonds
molecular compound - answernonmetal and nonmetal
ionic compound - answermetal and nonmetal
chemical compound - answerelements in fixed proportions
nucleus - answerhighly dense center of atom composed of protons and neutrons
protons - answerpositively charged
neutrons - answerneutral charge
, electrons - answerfound outside of the atom; negative charge
atomic number - answernumber of protons in nucleus
molar mass - answernumber under chemical symbol on periodic table
mass number - answersum of protons and neutrons
conductivity - answerbased on...
1. 3-D structure
2. mobility of electrons
3. electricity
electric current - answernet movement of electrons and ions
electricity - answerflow of electrons from one region to another that is driven by a
difference in potential energy
static electricity - answerelectricity built up in one place
conductive - answerallows electricity to flow
insulating - answerprohibits electricity from flowing
allotropes - answerdifferent structural forms of the same element
diatomic molecules - answermolecules with two identical atoms
rocks - answerheterogenous solid mixtures that contain a variety of ionic compounds
(minerals)
oxides - answeroxygen containing minerals
significant figures - answerrepresents accuracy of an experimental quantity known
ore - answerrock formation that contains a considerable concentration of a desired
metal
oxidation - answerprocess in which chemical species loses electrons
reduction - answerprocess in which chemical series gains electrons
redox - answerprocess in which chemical series gains and loses electrons
half reactions - answerchemical equations that show electrons lost/gained by reactants;
conversion of charge and mass
Matter - answer any solid, liquid, gas, or plasma that occupies a space and has mass
homogeneous mixture - answer mixture that is uniform throughout (solution)
heterogeneous mixture - answer mixture that is not uniform throughout
atoms - answer smallest unit of an element
element - answer many atoms of the same type; most basic building blocks
compounds - answer different elements bonded together (pure substance)
chemical symbols - answer one or two letter abbreviation for elements (atomic symbols)
group - answer vertical columns on periodic table; organized by common properties
Group 1 - answer alkali metals
Group 2 - answeralkaline earth metals
Group 17 - answerhalogens
Group 18 - answernoble gases (least likely to react)
chemical formula - answerelementary composition of a substance; consists of elements
and atomic ratio (subscripts)
molecule - answertwo or more atoms held together by chemical bonds
molecular compound - answernonmetal and nonmetal
ionic compound - answermetal and nonmetal
chemical compound - answerelements in fixed proportions
nucleus - answerhighly dense center of atom composed of protons and neutrons
protons - answerpositively charged
neutrons - answerneutral charge
, electrons - answerfound outside of the atom; negative charge
atomic number - answernumber of protons in nucleus
molar mass - answernumber under chemical symbol on periodic table
mass number - answersum of protons and neutrons
conductivity - answerbased on...
1. 3-D structure
2. mobility of electrons
3. electricity
electric current - answernet movement of electrons and ions
electricity - answerflow of electrons from one region to another that is driven by a
difference in potential energy
static electricity - answerelectricity built up in one place
conductive - answerallows electricity to flow
insulating - answerprohibits electricity from flowing
allotropes - answerdifferent structural forms of the same element
diatomic molecules - answermolecules with two identical atoms
rocks - answerheterogenous solid mixtures that contain a variety of ionic compounds
(minerals)
oxides - answeroxygen containing minerals
significant figures - answerrepresents accuracy of an experimental quantity known
ore - answerrock formation that contains a considerable concentration of a desired
metal
oxidation - answerprocess in which chemical species loses electrons
reduction - answerprocess in which chemical series gains electrons
redox - answerprocess in which chemical series gains and loses electrons
half reactions - answerchemical equations that show electrons lost/gained by reactants;
conversion of charge and mass
