Chemistry Exam questions
What is the height of a 6 m building in centimeters? - ✔✔ correct answer 600 cm
A balance is used to measure...? - ✔✔ correct answer mass
A sample of bismuth has a mass of 7872 g and a volume of 1.64cm3. WHat is the density of bismuth?
- ✔✔ correct answer 4.80x10cubed g/cm cubed
A measurement is said to have high accuracy if it ... - ✔✔ correct answer agrees closely with the
accepted standard
Number of sig figs in 0.000305? - ✔✔ correct answer 3
(1.5560x 10 to the -6) x (7.9860x 10 to the 13th) Don't forget about sig figs. - ✔✔ correct answer
1.246x10 to the 8th
Does 10.292 have 5 sig figs? - ✔✔ correct answer Yes (commas like 26,987 DON'T have sig figs. Only
decimals)
976.23 in scientific notation? - ✔✔ correct answer 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 - ✔✔ correct answer a hot glue gun melts a glue stick
An ice cube melting is an example of... - ✔✔ correct answer a change of state and a phsycial change
Whats used to measure volume? - ✔✔ correct answer Graduated cylinder or beaker
Following an example of density units
m
, Chemistry Exam questions
mL
g
g/mL - ✔✔ correct answer g/mL
Chocolate milk has a density of 1.25 g/mL. What is the volume of 11.6 g of chocolate milk? - ✔✔
correct answer 9.28 mL (divide)
Pure substance (compound) - ✔✔ correct answer
Heterogenous mixture - ✔✔ correct answer
Pure substance (element) - ✔✔ correct answer
Density of 1 penny compare to the density of 10? - ✔✔ correct answer Same
Quantifies accuracy? - ✔✔ correct answer percent error
Independent variable? - ✔✔ correct answer X-axis
Dependent variable? - ✔✔ correct answer y-axis
Which value represents the density of metal shown by graph
Y=1.161
X+0.875
r^2=0.933 - ✔✔ correct answer 1.161 (always the y)
How many sig figs in 100 mL? - ✔✔ correct answer 1
True for the element Silicon?
Element symbol is S
Contains 14 protons and 18 electrons
What is the height of a 6 m building in centimeters? - ✔✔ correct answer 600 cm
A balance is used to measure...? - ✔✔ correct answer mass
A sample of bismuth has a mass of 7872 g and a volume of 1.64cm3. WHat is the density of bismuth?
- ✔✔ correct answer 4.80x10cubed g/cm cubed
A measurement is said to have high accuracy if it ... - ✔✔ correct answer agrees closely with the
accepted standard
Number of sig figs in 0.000305? - ✔✔ correct answer 3
(1.5560x 10 to the -6) x (7.9860x 10 to the 13th) Don't forget about sig figs. - ✔✔ correct answer
1.246x10 to the 8th
Does 10.292 have 5 sig figs? - ✔✔ correct answer Yes (commas like 26,987 DON'T have sig figs. Only
decimals)
976.23 in scientific notation? - ✔✔ correct answer 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 - ✔✔ correct answer a hot glue gun melts a glue stick
An ice cube melting is an example of... - ✔✔ correct answer a change of state and a phsycial change
Whats used to measure volume? - ✔✔ correct answer Graduated cylinder or beaker
Following an example of density units
m
, Chemistry Exam questions
mL
g
g/mL - ✔✔ correct answer g/mL
Chocolate milk has a density of 1.25 g/mL. What is the volume of 11.6 g of chocolate milk? - ✔✔
correct answer 9.28 mL (divide)
Pure substance (compound) - ✔✔ correct answer
Heterogenous mixture - ✔✔ correct answer
Pure substance (element) - ✔✔ correct answer
Density of 1 penny compare to the density of 10? - ✔✔ correct answer Same
Quantifies accuracy? - ✔✔ correct answer percent error
Independent variable? - ✔✔ correct answer X-axis
Dependent variable? - ✔✔ correct answer y-axis
Which value represents the density of metal shown by graph
Y=1.161
X+0.875
r^2=0.933 - ✔✔ correct answer 1.161 (always the y)
How many sig figs in 100 mL? - ✔✔ correct answer 1
True for the element Silicon?
Element symbol is S
Contains 14 protons and 18 electrons
