CHEM 1120 EXAM 1 CHAPTERS 1,
2, & 11 EXAM WITH CORRECT
ANSWERS 2025
CHAPTER 1: Matter & ( correct answers ) -chem &
Measurements physical
properties/changes
-pure,
-solid, impure,
liquid, orheterogeneous,
gas
homogeneous
-sig figs
-scientific notation
-conversion factors
-temperature conversions
-specific heat
-density/specific gravity
What is the size and shape of a sample of ( correct answers ) no
gas? or volume definite shape
What is the size and shape of a sample of liquid? ( correct
answers ) indefinite shape but definite
volume
What is the size and shape of a sample of solid? ( correct
answers ) definite shape & volume
What are physical properties? ( correct answers )
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 answers )
describes how a substance may change or react to form a new substance.
Ex.) flammability & reactivity of a substance, burning
Chemistry ( correct answers ) The study of the composition, structure,
properties, & reactions of matter.
pure substance ( correct answers ) Matter that always has exactly
the same composition
pure substance can be classified as either a(n): ( correct answers )
element or compound
an element ( correct answers ) composed of one type
of atom Ex.) Neon
, a compound ( correct answers ) composed of more than one type of atom;
contains different elements attached to eachother.
if matter isn't pure it's.... ( correct answers ) impure
Mixture & an example ( correct answers ) 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 answers ) 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 answers ) a mixture that is uniform in
composition; components are evenly distributed and not easily
expressing chemical
distinguished. ( correct answers ) reactants: —>
change Water Hydrogen
Ex.) saltwater , sugar waterproducts:
+ Oxygen H2O H2 + O
1 kilogram = grams ( correct answers ) 1000
1 Deciliter (d) = L ( correct answers ) 0.1
1 centimeter = meters
( correct answers )
0.01 1 Milligram= Gram(s)
( correct answers ) 0.001
scientific notation general format
( correct
answers ) C x 10^n
when writing in scientific notation the coefficient has to be between what
numbers? ( correct answers )
Coefficient C between 1&9
exponent of 10 is...?( correct answers ) the number of times you move the
decimal when the decimal is moved to the left the exponent is? ( correct
answers ) POSITIVE
when the decimal is moved to the right the exponent is?
( correct answers ) NEGATIVE
Mass is measured in? ( correct answers ) kilograms
1kg=2.205lb grams-metric base 1000g = 1kg
2, & 11 EXAM WITH CORRECT
ANSWERS 2025
CHAPTER 1: Matter & ( correct answers ) -chem &
Measurements physical
properties/changes
-pure,
-solid, impure,
liquid, orheterogeneous,
gas
homogeneous
-sig figs
-scientific notation
-conversion factors
-temperature conversions
-specific heat
-density/specific gravity
What is the size and shape of a sample of ( correct answers ) no
gas? or volume definite shape
What is the size and shape of a sample of liquid? ( correct
answers ) indefinite shape but definite
volume
What is the size and shape of a sample of solid? ( correct
answers ) definite shape & volume
What are physical properties? ( correct answers )
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 answers )
describes how a substance may change or react to form a new substance.
Ex.) flammability & reactivity of a substance, burning
Chemistry ( correct answers ) The study of the composition, structure,
properties, & reactions of matter.
pure substance ( correct answers ) Matter that always has exactly
the same composition
pure substance can be classified as either a(n): ( correct answers )
element or compound
an element ( correct answers ) composed of one type
of atom Ex.) Neon
, a compound ( correct answers ) composed of more than one type of atom;
contains different elements attached to eachother.
if matter isn't pure it's.... ( correct answers ) impure
Mixture & an example ( correct answers ) 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 answers ) 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 answers ) a mixture that is uniform in
composition; components are evenly distributed and not easily
expressing chemical
distinguished. ( correct answers ) reactants: —>
change Water Hydrogen
Ex.) saltwater , sugar waterproducts:
+ Oxygen H2O H2 + O
1 kilogram = grams ( correct answers ) 1000
1 Deciliter (d) = L ( correct answers ) 0.1
1 centimeter = meters
( correct answers )
0.01 1 Milligram= Gram(s)
( correct answers ) 0.001
scientific notation general format
( correct
answers ) C x 10^n
when writing in scientific notation the coefficient has to be between what
numbers? ( correct answers )
Coefficient C between 1&9
exponent of 10 is...?( correct answers ) the number of times you move the
decimal when the decimal is moved to the left the exponent is? ( correct
answers ) POSITIVE
when the decimal is moved to the right the exponent is?
( correct answers ) NEGATIVE
Mass is measured in? ( correct answers ) kilograms
1kg=2.205lb grams-metric base 1000g = 1kg
