CHEM 101 MIDTERM IVY TECH | LATEST UPDATED 2026/2027 (GRADED A+)
Chemistry definition ✔️The science that seeks to understand what matter does by studying what atoms and molecules do
virtually everything around you is composed of _________ ✔️chemicals
atoms are bound together to form several different types of ______________ ✔️molecules
observations ✔️involve measuring or observing some aspect of nature
hypotheses ✔️tentative interpretations of the observations
laws ✔️summarize the results of a large number of observations
theories ✔️are models that explain and give the underlying causes for observations and laws
scientific method: experimentation ✔️laws, hypotheses, and theories must be tested and validated by experiments
scientific method ✔️a way of learning that emphasizes observation and experimentation to produce knowledge
Law of Conservation of Mass ✔️in a chemical reaction, matter is neither created nor destroyed
Who created the law of conservation of mass? ✔️Lavoisier
scientific theory ✔️A well-tested explanation for a wide range of observations or experimental results.
Atomic Theory ✔️a theory that states that all matter is composed of tiny particles called atoms.
Who created the atomic theory? ✔️John Dalton
uncertainty is indicated by the last __________ ___________ ✔️reported digit
significant numbers ✔️any number that is not a 0, sandwiched 0s, trailing 0s when there is a decimal place
not significant numbers ✔️leading 0s and trailing 0s at the end of a number without a decimal place
Sig Fig Multiplication/Division Rule ✔️carry the same number of sig figs as the factor with the fewest sig figs
Sig Figs: Adding and Subtracting ✔️carry the same number of decimal places as the quantity carrying the fewest decimal places
unit for length ✔️meter (m)
unit for mass ✔️kilogram (kg)
unit for time ✔️seconds (s)
unit for temperature ✔️Kelvin (K)
Tera (T) ✔️10^12
Giga (G) ✔️10^9
Mega (M) ✔️10^6
kilo (k) ✔️10^3
hecto (h) ✔️10^2
deca (da) ✔️10^1
deci (d) ✔️10^-1
centi (c) ✔️10^-2
milli (m) ✔️10^-3
, micro (u) ✔️10^-6
nano (n) ✔️10^-9
pico (p) ✔️10^-12
femto (f) ✔️10^-15
density equation ✔️mass / volume
density definition ✔️a fundamental property of all substances and generally differs from one substance to another
matter ✔️anything that occupies space and has mass
what is matter composed of? ✔️atoms and molecules
_____________ bonded together form a molecule ✔️elements
common states of matter ✔️solid, liquid, and gas
solid ✔️atoms or molecules pack close to each other in fixed locations - fixed volume and rigid shape
liquid ✔️atoms or molecules are close to each other but are free to move around - fixed volume, assume shape of container
Gas ✔️atoms or molecules are separated by large distances, free to move relative to one another - compressible, assume shape and volume of
their container
gasses are ✔️compressible
pure substance ✔️composed of only one type of element or molecule
mixed substance ✔️composed of two or more different types of atoms or molecules - not chemically united, simply mixed together
element ✔️A substance that cannot be broken down into simpler substances
compound ✔️a pure substance composed of two or more elements that are chemically combined
is air a pure substance or a mixture? ✔️mixture
two classifications of a mixture ✔️homogeneous and heterogeneous
physical property ✔️a substance displays without changing its composition
chemical property ✔️a substance displays only through changing its composition
Is odor a physical or chemical property? ✔️physical
Is flammability a physical or chemical property? ✔️chemical
Is boiling a physical or chemical change? ✔️physical
state changes ✔️transforms from one state of matter to another
matter undergoes a chemical change when it undergoes a ____________ _______________ ✔️chemical reaction
in a chemical reaction, the substances present before the chemical change are called _____________ ✔️reactants
the substances present after a chemical change are called _____________ ✔️products
Is burning a physical or chemical change? ✔️chemical
energy has the .... ✔️capacity to do work
work ✔️A result of a force acting on a distance
Chemistry definition ✔️The science that seeks to understand what matter does by studying what atoms and molecules do
virtually everything around you is composed of _________ ✔️chemicals
atoms are bound together to form several different types of ______________ ✔️molecules
observations ✔️involve measuring or observing some aspect of nature
hypotheses ✔️tentative interpretations of the observations
laws ✔️summarize the results of a large number of observations
theories ✔️are models that explain and give the underlying causes for observations and laws
scientific method: experimentation ✔️laws, hypotheses, and theories must be tested and validated by experiments
scientific method ✔️a way of learning that emphasizes observation and experimentation to produce knowledge
Law of Conservation of Mass ✔️in a chemical reaction, matter is neither created nor destroyed
Who created the law of conservation of mass? ✔️Lavoisier
scientific theory ✔️A well-tested explanation for a wide range of observations or experimental results.
Atomic Theory ✔️a theory that states that all matter is composed of tiny particles called atoms.
Who created the atomic theory? ✔️John Dalton
uncertainty is indicated by the last __________ ___________ ✔️reported digit
significant numbers ✔️any number that is not a 0, sandwiched 0s, trailing 0s when there is a decimal place
not significant numbers ✔️leading 0s and trailing 0s at the end of a number without a decimal place
Sig Fig Multiplication/Division Rule ✔️carry the same number of sig figs as the factor with the fewest sig figs
Sig Figs: Adding and Subtracting ✔️carry the same number of decimal places as the quantity carrying the fewest decimal places
unit for length ✔️meter (m)
unit for mass ✔️kilogram (kg)
unit for time ✔️seconds (s)
unit for temperature ✔️Kelvin (K)
Tera (T) ✔️10^12
Giga (G) ✔️10^9
Mega (M) ✔️10^6
kilo (k) ✔️10^3
hecto (h) ✔️10^2
deca (da) ✔️10^1
deci (d) ✔️10^-1
centi (c) ✔️10^-2
milli (m) ✔️10^-3
, micro (u) ✔️10^-6
nano (n) ✔️10^-9
pico (p) ✔️10^-12
femto (f) ✔️10^-15
density equation ✔️mass / volume
density definition ✔️a fundamental property of all substances and generally differs from one substance to another
matter ✔️anything that occupies space and has mass
what is matter composed of? ✔️atoms and molecules
_____________ bonded together form a molecule ✔️elements
common states of matter ✔️solid, liquid, and gas
solid ✔️atoms or molecules pack close to each other in fixed locations - fixed volume and rigid shape
liquid ✔️atoms or molecules are close to each other but are free to move around - fixed volume, assume shape of container
Gas ✔️atoms or molecules are separated by large distances, free to move relative to one another - compressible, assume shape and volume of
their container
gasses are ✔️compressible
pure substance ✔️composed of only one type of element or molecule
mixed substance ✔️composed of two or more different types of atoms or molecules - not chemically united, simply mixed together
element ✔️A substance that cannot be broken down into simpler substances
compound ✔️a pure substance composed of two or more elements that are chemically combined
is air a pure substance or a mixture? ✔️mixture
two classifications of a mixture ✔️homogeneous and heterogeneous
physical property ✔️a substance displays without changing its composition
chemical property ✔️a substance displays only through changing its composition
Is odor a physical or chemical property? ✔️physical
Is flammability a physical or chemical property? ✔️chemical
Is boiling a physical or chemical change? ✔️physical
state changes ✔️transforms from one state of matter to another
matter undergoes a chemical change when it undergoes a ____________ _______________ ✔️chemical reaction
in a chemical reaction, the substances present before the chemical change are called _____________ ✔️reactants
the substances present after a chemical change are called _____________ ✔️products
Is burning a physical or chemical change? ✔️chemical
energy has the .... ✔️capacity to do work
work ✔️A result of a force acting on a distance
