CHEM 1020 EXAM 1 | QUESTIONS WITH VERIFIED
ACCURATE ANSWERS | 2026
matter - Answers - any solid, liquid, gas, or plasma that occupies a space and has mass
homogeneous mixture - Answers - mixture that is uniform throughout (solution)
heterogeneous mixture - Answers - mixture that is not uniform throughout
atoms - Answers - smallest unit of an element
element - Answers - many atoms of the same type; most basic building blocks
compounds - Answers - different elements bonded together (pure substance)
chemical symbols - Answers - one or two letter abbreviation for elements (atomic
symbols)
group - Answers - vertical columns on periodic table; organized by common properties
Group 1 - Answers - alkali metals
Group 2 - Answers - alkaline earth metals
Group 17 - Answers - halogens
Group 18 - Answers - noble gases (least likely to react)
chemical formula - Answers - elementary composition of a substance; consists of
elements and atomic ratio (subscripts)
molecule - Answers - two or more atoms held together by chemical bonds
molecular compound - Answers - nonmetal and nonmetal
ionic compound - Answers - metal and nonmetal
chemical compound - Answers - elements in fixed proportions
nucleus - Answers - highly dense center of atom composed of protons and neutrons
protons - Answers - positively charged
, neutrons - Answers - neutral charge
electrons - Answers - found outside of the atom; negative charge
atomic number - Answers - number of protons in nucleus
molar mass - Answers - number under chemical symbol on periodic table
mass number - Answers - sum of protons and neutrons
conductivity - Answers - based on...
1. 3-D structure
2. mobility of electrons
3. electricity
electric current - Answers - net movement of electrons and ions
electricity - Answers - flow of electrons from one region to another that is driven by a
difference in potential energy
static electricity - Answers - electricity built up in one place
conductive - Answers - allows electricity to flow
insulating - Answers - prohibits electricity from flowing
allotropes - Answers - different structural forms of the same element
diatomic molecules - Answers - molecules with two identical atoms
rocks - Answers - heterogenous solid mixtures that contain a variety of ionic compounds
(minerals)
oxides - Answers - oxygen containing minerals
significant figures - Answers - represents accuracy of an experimental quantity known
ore - Answers - rock formation that contains a considerable concentration of a desired
metal
oxidation - Answers - process in which chemical species loses electrons
reduction - Answers - process in which chemical series gains electrons
redox - Answers - process in which chemical series gains and loses electrons
ACCURATE ANSWERS | 2026
matter - Answers - any solid, liquid, gas, or plasma that occupies a space and has mass
homogeneous mixture - Answers - mixture that is uniform throughout (solution)
heterogeneous mixture - Answers - mixture that is not uniform throughout
atoms - Answers - smallest unit of an element
element - Answers - many atoms of the same type; most basic building blocks
compounds - Answers - different elements bonded together (pure substance)
chemical symbols - Answers - one or two letter abbreviation for elements (atomic
symbols)
group - Answers - vertical columns on periodic table; organized by common properties
Group 1 - Answers - alkali metals
Group 2 - Answers - alkaline earth metals
Group 17 - Answers - halogens
Group 18 - Answers - noble gases (least likely to react)
chemical formula - Answers - elementary composition of a substance; consists of
elements and atomic ratio (subscripts)
molecule - Answers - two or more atoms held together by chemical bonds
molecular compound - Answers - nonmetal and nonmetal
ionic compound - Answers - metal and nonmetal
chemical compound - Answers - elements in fixed proportions
nucleus - Answers - highly dense center of atom composed of protons and neutrons
protons - Answers - positively charged
, neutrons - Answers - neutral charge
electrons - Answers - found outside of the atom; negative charge
atomic number - Answers - number of protons in nucleus
molar mass - Answers - number under chemical symbol on periodic table
mass number - Answers - sum of protons and neutrons
conductivity - Answers - based on...
1. 3-D structure
2. mobility of electrons
3. electricity
electric current - Answers - net movement of electrons and ions
electricity - Answers - flow of electrons from one region to another that is driven by a
difference in potential energy
static electricity - Answers - electricity built up in one place
conductive - Answers - allows electricity to flow
insulating - Answers - prohibits electricity from flowing
allotropes - Answers - different structural forms of the same element
diatomic molecules - Answers - molecules with two identical atoms
rocks - Answers - heterogenous solid mixtures that contain a variety of ionic compounds
(minerals)
oxides - Answers - oxygen containing minerals
significant figures - Answers - represents accuracy of an experimental quantity known
ore - Answers - rock formation that contains a considerable concentration of a desired
metal
oxidation - Answers - process in which chemical species loses electrons
reduction - Answers - process in which chemical series gains electrons
redox - Answers - process in which chemical series gains and loses electrons
