Chemistry Exam 56 Questions and Correct Answers-
Latest Update.
What is the height of a 6 m building in centimeters? - > 600 cm
A balance is used to measure...? - > mass
A sample of bismuth has a mass of 7872 g and a volume of 1.64cm3. WHat is the
density of bismuth? - > 4.80x10cubed g/cm cubed
A measurement is said to have high accuracy if it ... - > agrees closely with the
accepted standard
Number of sig figs in 0.000305? - > 3
(1.5560x 10 to the -6) x (7.9860x 10 to the 13th) Don't forget about sig figs. - > 1.246x10
to the 8th
Does 10.292 have 5 sig figs? - > Yes (commas like 26,987 DON'T have sig figs. Only
decimals)
976.23 in scientific notation? - > 9.7623 x 10 to the second
Not ex of chemical change?
a peach soils
a metal bowl rusts
a piece of jewelry turns your skin green
a hot glue gun melts a glue stick - > a hot glue gun melts a glue stick
An ice cube melting is an example of... - > a change of state and a phsycial change
Whats used to measure volume? - > Graduated cylinder or beaker
Following an example of density units
m
mL
g
g/mL - > g/mL
Chocolate milk has a density of 1.25 g/mL. What is the volume of 11.6 g of chocolate
milk? - > 9.28 mL (divide)
Pure substance (compound) - >
Heterogenous mixture - >
, Pure substance (element) - >
Density of 1 penny compare to the density of 10? - > Same
Quantifies accuracy? - > percent error
Independent variable? - > X-axis
Dependent variable? - > y-axis
Which value represents the density of metal shown by graph
Y=1.161
X+0.875
r^2=0.933 - > 1.161 (always the y)
How many sig figs in 100 mL? - > 1
True for the element Silicon?
Element symbol is S
Contains 14 protons and 18 electrons
Contains 28 protons and 14 electrons
None of the above - > None of the above
Which of the following is an alkaline earth metal?
Chromium
Xenon
Barium
Lithium - > Barium
Each of the following three isotopes: hydrogen 1, hydrogen 2, hydrogen 3 - > Contains
at least one neutron
Which group is potassium a part of? - > Alkali metals
Following descriptions NOT a characteristic of a nucleus of an atom?
a. always contains the same amount of protons and neutrons
b.contains uncharged particles
c. positively charged
d.accounts for most of the atoms mass - > a
Transition metal?
Fluorine
Iron
Arsenic
Hydrogen - > Iron
Latest Update.
What is the height of a 6 m building in centimeters? - > 600 cm
A balance is used to measure...? - > mass
A sample of bismuth has a mass of 7872 g and a volume of 1.64cm3. WHat is the
density of bismuth? - > 4.80x10cubed g/cm cubed
A measurement is said to have high accuracy if it ... - > agrees closely with the
accepted standard
Number of sig figs in 0.000305? - > 3
(1.5560x 10 to the -6) x (7.9860x 10 to the 13th) Don't forget about sig figs. - > 1.246x10
to the 8th
Does 10.292 have 5 sig figs? - > Yes (commas like 26,987 DON'T have sig figs. Only
decimals)
976.23 in scientific notation? - > 9.7623 x 10 to the second
Not ex of chemical change?
a peach soils
a metal bowl rusts
a piece of jewelry turns your skin green
a hot glue gun melts a glue stick - > a hot glue gun melts a glue stick
An ice cube melting is an example of... - > a change of state and a phsycial change
Whats used to measure volume? - > Graduated cylinder or beaker
Following an example of density units
m
mL
g
g/mL - > g/mL
Chocolate milk has a density of 1.25 g/mL. What is the volume of 11.6 g of chocolate
milk? - > 9.28 mL (divide)
Pure substance (compound) - >
Heterogenous mixture - >
, Pure substance (element) - >
Density of 1 penny compare to the density of 10? - > Same
Quantifies accuracy? - > percent error
Independent variable? - > X-axis
Dependent variable? - > y-axis
Which value represents the density of metal shown by graph
Y=1.161
X+0.875
r^2=0.933 - > 1.161 (always the y)
How many sig figs in 100 mL? - > 1
True for the element Silicon?
Element symbol is S
Contains 14 protons and 18 electrons
Contains 28 protons and 14 electrons
None of the above - > None of the above
Which of the following is an alkaline earth metal?
Chromium
Xenon
Barium
Lithium - > Barium
Each of the following three isotopes: hydrogen 1, hydrogen 2, hydrogen 3 - > Contains
at least one neutron
Which group is potassium a part of? - > Alkali metals
Following descriptions NOT a characteristic of a nucleus of an atom?
a. always contains the same amount of protons and neutrons
b.contains uncharged particles
c. positively charged
d.accounts for most of the atoms mass - > a
Transition metal?
Fluorine
Iron
Arsenic
Hydrogen - > Iron
