CHEM 134 LECTURE EXAM 1
What is matter? Give examples of matter. - answer anything that takes up space and
has mass. ex: you, trees, water, a house, air
What is a substance? Ex - answer A form of matter that has a definite (constant)
composition and distinct properties (water, ammonia, sugar, table salt)
What is a mixture? Ex - 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? - answer homogeneous and heterogeneous
mixtures
What is a homogeneous mixture? ex - answera mixture that is the same throughout
(coffee)
What is a heterogeneous mixture? ex - answera mixture in which the composition is not
uniform throughout (pieces of seaweed in water)
what are the three states of matter? - answersolid, liquid, gas
how do you identify a substance? - answerbased on their properties and their
composition
what are the four types of properties? - answerphysical, chemical, intensive, extensive
What is a physical property/how is it measured? ex of physical changes -
answerMeasured 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 - answera
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)? -
answera 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)? -
answera 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? - answerNo
what is a measured quantity? - answerwritten as number with an appropriate unit and
are essential to stating measurement correctly.
what is metric unit? - answera metric unit is mass length volume. related decimally to
the power of 10
what is a revised metric system? - answerinternational system of units called SI units
What is length measured in and what is the symbol for this measurement? -
answermeters (m)
what is mass measured in? symbol - answerkilograms (kg)
what is time measured in? symbol - answerseconds (s)
what is electrical current measured in? symbol - answerampere (A)
what is temperature measured in? - answer(K) Kelvin
what is the amount of a substance measured in? symbol - answerMole (mol)
what luminous intensity measured in? - answercandela (cd)
what is the symbol for tera and what does it mean in SI units? - answerT. SI units:
10^12
what is the symbol for giga and what does it mean in SI units? - answerG. 10^9
what is the symbol for mega and what does it mean in SI units? - answerM. 10^6
what is the symbol for kilo and what does it mean in SI units? - answerk. 10^3
what is the symbol for deci and what does it mean in SI units? - answerd. 10^-1
what is the symbol for centi and what does it mean in SI units? - answerc. 10^-2
what is the symbol for milli and what does it mean in SI units? - answerm. 10^-3
what is the symbol for micro and what does it mean in SI units? - answeru/mu. 10^-6
what is the symbol for nano and what does it mean in SI units? - answern. 10^-9
what is the symbol for pico and what does it mean in SI units? - answerp. 10^-12
, how many grams does 1kg equal? translate this value into scientific notation. -
answer1kg= 1000g= 1x10^3 g
What is weight? - answerthe force that gravity exerts on an object
What is mass? - answerthe amount of matter in an object
What is volume? - answerthe amount of space an object occupies
what is the unit of volume? which units are the most used? - answerm^3 but cm^3 is
often used as well as dm(decimeter)^3
how many meters does one centimeters cubed equal? show your work. - answer(1x10^-
2 m)^3= 1X10^-6 m^3
1dm^3 to m^3 - answer(1x10^-1 m)^3= 1X10^-3 m^3
what is liter (L;)? - answeris volume occupied by 1 cubic decimeter
how many cm^3 are in a ml? - answer1ml=1cm^3
convert liter to dm^3 (how many ml in a liter how many cm^3 in __________ ml and
how dm^3 in ___________ cm^3) - answer1L= 1000 mL= 1000^cm^3= 1 dm^3
What is density? formula for density - answerMass per unit volume. d=m/v
what is the SI unit for density? - answerkg/m^3
what is the smaller unit for density? - answerg/cm^3=g/mL
what is temperature in SI unit? - answerkelvin (K)
what are the other units of temperature? - answerdegrees Celsius (C) and degrees
Fahrenheit (F)
what is the formula for Celsius conversion to Fahrenheit? - answerC = (F -32 F) x 5C/9
F
kelvin equation for centigrade to kelvin - answerK = (C + 273.15 C) 1 K/1 C
write 568.762 in scientific notation - answer5.68762 X 10^2
write .00000772 in scientific notation - answer7.72 X 10^-6
in scientific notation if the decimal point is move to the right is the exponent on 10
negative or positive? - answernegative
What is matter? Give examples of matter. - answer anything that takes up space and
has mass. ex: you, trees, water, a house, air
What is a substance? Ex - answer A form of matter that has a definite (constant)
composition and distinct properties (water, ammonia, sugar, table salt)
What is a mixture? Ex - 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? - answer homogeneous and heterogeneous
mixtures
What is a homogeneous mixture? ex - answera mixture that is the same throughout
(coffee)
What is a heterogeneous mixture? ex - answera mixture in which the composition is not
uniform throughout (pieces of seaweed in water)
what are the three states of matter? - answersolid, liquid, gas
how do you identify a substance? - answerbased on their properties and their
composition
what are the four types of properties? - answerphysical, chemical, intensive, extensive
What is a physical property/how is it measured? ex of physical changes -
answerMeasured 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 - answera
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)? -
answera 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)? -
answera 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? - answerNo
what is a measured quantity? - answerwritten as number with an appropriate unit and
are essential to stating measurement correctly.
what is metric unit? - answera metric unit is mass length volume. related decimally to
the power of 10
what is a revised metric system? - answerinternational system of units called SI units
What is length measured in and what is the symbol for this measurement? -
answermeters (m)
what is mass measured in? symbol - answerkilograms (kg)
what is time measured in? symbol - answerseconds (s)
what is electrical current measured in? symbol - answerampere (A)
what is temperature measured in? - answer(K) Kelvin
what is the amount of a substance measured in? symbol - answerMole (mol)
what luminous intensity measured in? - answercandela (cd)
what is the symbol for tera and what does it mean in SI units? - answerT. SI units:
10^12
what is the symbol for giga and what does it mean in SI units? - answerG. 10^9
what is the symbol for mega and what does it mean in SI units? - answerM. 10^6
what is the symbol for kilo and what does it mean in SI units? - answerk. 10^3
what is the symbol for deci and what does it mean in SI units? - answerd. 10^-1
what is the symbol for centi and what does it mean in SI units? - answerc. 10^-2
what is the symbol for milli and what does it mean in SI units? - answerm. 10^-3
what is the symbol for micro and what does it mean in SI units? - answeru/mu. 10^-6
what is the symbol for nano and what does it mean in SI units? - answern. 10^-9
what is the symbol for pico and what does it mean in SI units? - answerp. 10^-12
, how many grams does 1kg equal? translate this value into scientific notation. -
answer1kg= 1000g= 1x10^3 g
What is weight? - answerthe force that gravity exerts on an object
What is mass? - answerthe amount of matter in an object
What is volume? - answerthe amount of space an object occupies
what is the unit of volume? which units are the most used? - answerm^3 but cm^3 is
often used as well as dm(decimeter)^3
how many meters does one centimeters cubed equal? show your work. - answer(1x10^-
2 m)^3= 1X10^-6 m^3
1dm^3 to m^3 - answer(1x10^-1 m)^3= 1X10^-3 m^3
what is liter (L;)? - answeris volume occupied by 1 cubic decimeter
how many cm^3 are in a ml? - answer1ml=1cm^3
convert liter to dm^3 (how many ml in a liter how many cm^3 in __________ ml and
how dm^3 in ___________ cm^3) - answer1L= 1000 mL= 1000^cm^3= 1 dm^3
What is density? formula for density - answerMass per unit volume. d=m/v
what is the SI unit for density? - answerkg/m^3
what is the smaller unit for density? - answerg/cm^3=g/mL
what is temperature in SI unit? - answerkelvin (K)
what are the other units of temperature? - answerdegrees Celsius (C) and degrees
Fahrenheit (F)
what is the formula for Celsius conversion to Fahrenheit? - answerC = (F -32 F) x 5C/9
F
kelvin equation for centigrade to kelvin - answerK = (C + 273.15 C) 1 K/1 C
write 568.762 in scientific notation - answer5.68762 X 10^2
write .00000772 in scientific notation - answer7.72 X 10^-6
in scientific notation if the decimal point is move to the right is the exponent on 10
negative or positive? - answernegative
