CHEM 134 LECTURE EXAM 1
QUESTIONS AND ANSWERS Latest
2026
What is matter? give examples of matter. -
correct answer ✅anything that takes up space and has mass. ex:
you, trees, water, a house, air
What is a substance? ex -
correct answer ✅A form of matter that has a definite (constant)
composition and distinct properties (water, ammonia, sugar, table
salt)
What is a mixture? ex -
correct answer ✅is a combination of two or more substances in
which the substances retain their distinct identities (constant
composition throughout) ex: sweat
what are the two types of mixtures? -
correct answer ✅homogeneous and heterogeneous mixtures
What is a homogeneous mixture? ex -
correct answer ✅a mixture that is the same throughout (coffee)
,CHEM 134 LECTURE EXAM 1
QUESTIONS AND ANSWERS Latest
2026
What is a heterogeneous mixture? ex -
correct answer ✅a mixture in which the composition is not
uniform throughout (pieces of seaweed in water)
what are the three states of matter? -
correct answer ✅solid, liquid, gas
how do you identify a substance? -
correct answer ✅based on their properties and their composition
what are the four types of properties? -
correct answer ✅physical, chemical, intensive, extensive
What is a physical property/how is it measured? ex of physical
changes -
correct answer ✅Measured without changing the composition of
the substance (color, melting pt, boiling pt. --------- SUBSTANCE IS
THE SAME BUT IT PHYSICALLY CHANGES)
what is a chemical property/how is it measured? ex of chemical
changes -
,CHEM 134 LECTURE EXAM 1
QUESTIONS AND ANSWERS Latest
2026
correct answer ✅a chemical property is measures via carrying out
a chemical change. (ex burning H2 to in O2 to make H2O)
What is an extensive property? How is it measured ( using mass,
volume, or density)? -
correct answer ✅a property that depends on the amount of
matter in a sample(measured using mass an volume.
What is an intensive property? How is it measured ( using mass,
volume, or density)? -
correct answer ✅a property that depends on the type of matter in
a sample, not the amount of matter. Measured using density
are all types of properties measured using the same instruments? -
correct answer ✅No
what is a measured quantity? -
correct answer ✅written as number with an appropriate unit and
are essential to stating measurement correctly.
, CHEM 134 LECTURE EXAM 1
QUESTIONS AND ANSWERS Latest
2026
what is metric unit? -
correct answer ✅a metric unit is mass length volume. related
decimally to the power of 10
what is a revised metric system? -
correct answer ✅international system of units called SI units
What is length measured in and what is the symbol for this
measurement? -
correct answer ✅meters (m)
what is mass measured in? symbol -
correct answer ✅kilograms (kg)
what is time measured in? symbol -
correct answer ✅seconds (s)
what is electrical current measured in? symbol -
correct answer ✅ampere (A)
QUESTIONS AND ANSWERS Latest
2026
What is matter? give examples of matter. -
correct answer ✅anything that takes up space and has mass. ex:
you, trees, water, a house, air
What is a substance? ex -
correct answer ✅A form of matter that has a definite (constant)
composition and distinct properties (water, ammonia, sugar, table
salt)
What is a mixture? ex -
correct answer ✅is a combination of two or more substances in
which the substances retain their distinct identities (constant
composition throughout) ex: sweat
what are the two types of mixtures? -
correct answer ✅homogeneous and heterogeneous mixtures
What is a homogeneous mixture? ex -
correct answer ✅a mixture that is the same throughout (coffee)
,CHEM 134 LECTURE EXAM 1
QUESTIONS AND ANSWERS Latest
2026
What is a heterogeneous mixture? ex -
correct answer ✅a mixture in which the composition is not
uniform throughout (pieces of seaweed in water)
what are the three states of matter? -
correct answer ✅solid, liquid, gas
how do you identify a substance? -
correct answer ✅based on their properties and their composition
what are the four types of properties? -
correct answer ✅physical, chemical, intensive, extensive
What is a physical property/how is it measured? ex of physical
changes -
correct answer ✅Measured without changing the composition of
the substance (color, melting pt, boiling pt. --------- SUBSTANCE IS
THE SAME BUT IT PHYSICALLY CHANGES)
what is a chemical property/how is it measured? ex of chemical
changes -
,CHEM 134 LECTURE EXAM 1
QUESTIONS AND ANSWERS Latest
2026
correct answer ✅a chemical property is measures via carrying out
a chemical change. (ex burning H2 to in O2 to make H2O)
What is an extensive property? How is it measured ( using mass,
volume, or density)? -
correct answer ✅a property that depends on the amount of
matter in a sample(measured using mass an volume.
What is an intensive property? How is it measured ( using mass,
volume, or density)? -
correct answer ✅a property that depends on the type of matter in
a sample, not the amount of matter. Measured using density
are all types of properties measured using the same instruments? -
correct answer ✅No
what is a measured quantity? -
correct answer ✅written as number with an appropriate unit and
are essential to stating measurement correctly.
, CHEM 134 LECTURE EXAM 1
QUESTIONS AND ANSWERS Latest
2026
what is metric unit? -
correct answer ✅a metric unit is mass length volume. related
decimally to the power of 10
what is a revised metric system? -
correct answer ✅international system of units called SI units
What is length measured in and what is the symbol for this
measurement? -
correct answer ✅meters (m)
what is mass measured in? symbol -
correct answer ✅kilograms (kg)
what is time measured in? symbol -
correct answer ✅seconds (s)
what is electrical current measured in? symbol -
correct answer ✅ampere (A)
