CHEM 1120 Exam 1 Chapters 1, 2 & 11 Review – Complete Study Guide
(2026)
CHAPTER 1: Matter & Measurements - correct answer ✔✔-chem & physical properties/changes
-solid, liquid, or gas
-pure, impure, heterogeneous, homogeneous
-sig figs
-scientific notation
-conversion factors
-temperature conversions
-specific heat
-density/specific gravity
What is the size and shape of a sample of gas? - correct answer ✔✔no definite shape or volume
What is the size and shape of a sample of liquid? - correct answer ✔✔indefinite shape but
definite volume
What is the size and shape of a sample of solid? - correct answer ✔✔definite shape & volume
What are physical properties? - correct answer ✔✔characteristics that can be observed without
changing it into another substance.
Ex.) shape, size, color, taste, density, melting/boiling point.
What are chemical properties? - correct answer ✔✔describes how a substance may change or
react to form a new substance.
Ex.) flammability & reactivity of a substance, burning
,Chemistry - correct answer ✔✔The study of the composition, structure, properties, & reactions
of matter.
pure substance - correct answer ✔✔Matter that always has exactly the same composition
pure substance can be classified as either a(n): - correct answer ✔✔element or compound
an element - correct answer ✔✔composed of one type of atom
Ex.) Neon
a compound - correct answer ✔✔composed of more than one type of atom; contains different
elements attached to eachother.
if matter isn't pure it's.... - correct answer ✔✔impure
Mixture & an example - correct answer ✔✔A combination of two or more substances that are
not chemically combined (they retain their properties)
Ex.) Water + Ethanol =mixture not chemically combined. Both are clear; different parts of the
mixture are not visible
heterogeneous mixture - correct answer ✔✔A mixture that is not uniform in composition;
components are not evenly distributed throughout the mixture.
Ex.) oil & vinegar, pizza. Think of a recipe. No one makes it the same way. Not always even
amounts of each.
homogeneous mixture - correct answer ✔✔a mixture that is uniform in composition;
components are evenly distributed and not easily distinguished.
, Ex.) saltwater , sugar water
expressing chemical change - correct answer ✔✔reactants: —> products:
Water Hydrogen + Oxygen
H2O H2 + O
1 kilogram = ____ grams - correct answer ✔✔1000
1 Deciliter (d) = ______ L - correct answer ✔✔0.1
1 centimeter = ___ meters - correct answer ✔✔0.01
1 Milligram=__ Gram(s) - correct answer ✔✔0.001
scientific notation general format - correct answer ✔✔C x 10^n
when writing in scientific notation the coefficient has to be between what numbers? - correct
answer ✔✔Coefficient C between 1&9
exponent of 10 is...? - correct answer ✔✔the number of times you move the decimal
when the decimal is moved to the left the exponent is? - correct answer ✔✔POSITIVE
when the decimal is moved to the right the exponent is? - correct answer ✔✔NEGATIVE
Mass is measured in? - correct answer ✔✔kilograms 1kg=2.205lb
(2026)
CHAPTER 1: Matter & Measurements - correct answer ✔✔-chem & physical properties/changes
-solid, liquid, or gas
-pure, impure, heterogeneous, homogeneous
-sig figs
-scientific notation
-conversion factors
-temperature conversions
-specific heat
-density/specific gravity
What is the size and shape of a sample of gas? - correct answer ✔✔no definite shape or volume
What is the size and shape of a sample of liquid? - correct answer ✔✔indefinite shape but
definite volume
What is the size and shape of a sample of solid? - correct answer ✔✔definite shape & volume
What are physical properties? - correct answer ✔✔characteristics that can be observed without
changing it into another substance.
Ex.) shape, size, color, taste, density, melting/boiling point.
What are chemical properties? - correct answer ✔✔describes how a substance may change or
react to form a new substance.
Ex.) flammability & reactivity of a substance, burning
,Chemistry - correct answer ✔✔The study of the composition, structure, properties, & reactions
of matter.
pure substance - correct answer ✔✔Matter that always has exactly the same composition
pure substance can be classified as either a(n): - correct answer ✔✔element or compound
an element - correct answer ✔✔composed of one type of atom
Ex.) Neon
a compound - correct answer ✔✔composed of more than one type of atom; contains different
elements attached to eachother.
if matter isn't pure it's.... - correct answer ✔✔impure
Mixture & an example - correct answer ✔✔A combination of two or more substances that are
not chemically combined (they retain their properties)
Ex.) Water + Ethanol =mixture not chemically combined. Both are clear; different parts of the
mixture are not visible
heterogeneous mixture - correct answer ✔✔A mixture that is not uniform in composition;
components are not evenly distributed throughout the mixture.
Ex.) oil & vinegar, pizza. Think of a recipe. No one makes it the same way. Not always even
amounts of each.
homogeneous mixture - correct answer ✔✔a mixture that is uniform in composition;
components are evenly distributed and not easily distinguished.
, Ex.) saltwater , sugar water
expressing chemical change - correct answer ✔✔reactants: —> products:
Water Hydrogen + Oxygen
H2O H2 + O
1 kilogram = ____ grams - correct answer ✔✔1000
1 Deciliter (d) = ______ L - correct answer ✔✔0.1
1 centimeter = ___ meters - correct answer ✔✔0.01
1 Milligram=__ Gram(s) - correct answer ✔✔0.001
scientific notation general format - correct answer ✔✔C x 10^n
when writing in scientific notation the coefficient has to be between what numbers? - correct
answer ✔✔Coefficient C between 1&9
exponent of 10 is...? - correct answer ✔✔the number of times you move the decimal
when the decimal is moved to the left the exponent is? - correct answer ✔✔POSITIVE
when the decimal is moved to the right the exponent is? - correct answer ✔✔NEGATIVE
Mass is measured in? - correct answer ✔✔kilograms 1kg=2.205lb
