Date received___________________ Blk__________ UnitName_______________________________________ 1 Test A - Chemistry Study guide
Unit 1 CHEMISTRY Test STUDY GUIDE TEST DATE:_________________________ Unit 1 Test
A - Chemistry Study guide
1. The closeness of a measurement to its true value is a measure of its ________________________.
2. Write a decimal number that contains three significant figures?__________
of a5008
km in scientific
notation
is is
_________________.
The expression
closeness of
measurement
to its true
value
a measure of its ________________________.
How
many
significant
figures
are
in
the
measurement
81.40
grams?_________________
Write a decimal number that contains three significant
figures?__________
Name 3 pieces of lab safety equipment would be a good choice to use if your shirt was on fire?
The expression of 5008 km in scientific notation is _________________.
How many significant figures are in the measurement 40,5000mg?
3.
1.
4.
2.
5.
3.
6.
4.
7.
5.
8.
6.
How many significant figures are in the measurement 81.40 grams?_________________
The prefix for
“Kilo-“= ________ , Milli=___________
Name 3 pieces of lab safety equipment would be a good choice to use if your shirt was on fire?
State 3 units for measuring mass in ascending order _________ __________ ___________
How many significant figures are in the measurement 40,5000mg?
9.
factor
coverting
meters into
Decameters=
7. Conversion
The prefix
forto use when
“Kilo-“=
________
, Milli=___________
10.
What 3is units
the uncertain
digit in mass
the following
number
13.86_____________
8. State
for measuring
in ascending
order
_________ __________ ___________
12. A sample of iorn has a volume of 5.0 mL. The density of iron is 2.87 g/mL. Write the correct expression to
calculate the
masstoofuse
thewhen
sample
using dimensional
9. Conversion
factor
coverting
meters intoanalysis?
Decameters=
10.
13.
14.
!12.
"!
15.
!
!
13.
19
14.
15.
What
is the
uncertain digit in
followingnotation?___________________
number 13.86_____________
Express
0.00000000000145
m the
in scientific
In sample
the measurement
0.305
L, which
digit
is the
estimated
A
of iorn has
a volume
of 5.0
mL.
The
densitydigit?______________
of iron is 2.87 g/mL. Write the correct expression to
(2004-27) Which of the following came first
State the 3the
SI mass
base units
______________
calculate
of the________________,
sample using dimensional
analysis? and8.___________
the scientific study of living things?
a. Light microscope
Express 0.00000000000145 m in scientific notation?___________________
b. Electron microscope
c. Cell theory
In the measurement 0.305 L, which digit is the estimated digit?______________
d. Model of DNA
State the 3 SI base units ________________, ______________
and ___________
!
9. (2004-44) Early classification systems consisted
two kingdoms; Plantae and Animalia. What scientif
development allowed taxonomists to establish the
Monera and Protista kingdoms?
16
e. Development of Koch’s postulates
write the volume of water in graduated cylinder above ?
f. Creation of electrophoresis
g. Discovery of DNA
h. Invention of the electron microscope
17. What is the measurement 1042 L rounded off to 3 significant digits? _______________
18. Name two possible equipment that would be most useful to determine the density of a liquid?
!
_________________________, _______________________________
16
write the9.10949
volumex of
above
?
19. Express
103water
kg toin1,graduated
2, 3, and 4cylinder
significant
figures.
!
! AB 1 sig dig __________________
3 sig digs ___________________
What is the measurement 1042 L rounded off to 3 significant digits? _______________
!17.
C
D
!18.
Name
two_________________
possible equipment that would be
most
to determine the density of a liquid?
2 sig digs
4 sig
digsuseful
___________________
10.
20
_________________________, _______________________________
20. Round off the measurement 0.0031955 m to three significant figures. _____________
21. Express
Write the 9.10949
followingx number
notation
with 3 signifiant
19.
103 kg in
to scientific
1, 2, 3, and
4 significant
figures. digits.
0.000043480 _____________________________
!
! 22. 1What
sig dig
3 sig digs ___________________
does__________________
“MSDS” stand for?
!
_____________________________________________________________________
!
2_____________________________________________________________________
sig digs _________________
4 sig digs ___________________
(2003-6) When viewing a prepared slide under the compound microscope, a
!
student has
remove
his glasses.
means he will need to readjust for
Round off the measurement 0.0031955
m totothree
significant
figures.This
_____________
!20.
F
fine focus with which part labeled above?
! G
a) 1 with
b.)32signifiant
c. )3
21. Write the following number in scientific notation
digits. d.) 4
! H
J
0.000043480 _____________________________
!
!
##$!%&''()*+,!-./!012345/67!8.98!3.64:424:/2!96/!1;54<5/0!1;!1;./6189;3/!=92!:90/!>4221?</!?7!8./
22. What does “MSDS” stand for?
1;5/;814;!4@!8./!A!
_____________________________________________________________________
!
_____________________________________________________________________
!
!
!
!
1 Name_______________________________________ Date received___________________ Blk__________ Unit 1 CHEMISTRY Test STUDY GUIDE TEST DATE:_________________________ 23.
What piece of lab equipment would you use to take the following measurements?
volume _____________________________
mass _______________________________
temperature __________________________
24.
100.50 x 0.00357 expressed in the correct number of significant digits? ________________
35.
A piece of metal has a mass of 4.050 grams and a volume of 6.0 mL. What is the density of this metal?
.
26.
Convert 4.5 grams to centigrams using dimensional analysis.
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.
27.
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How many kilograms are there in 23,000 milligrams?
24
Data about the climate in an ecosystem were collected for 30 years.
Which hypothesis about a population of eagles could be made based on
the climate data collected?
.
A Eagles remain with the same mate throughout their lifetime.
27. An unknown solid has a density of 4.5 and a volume of 1.04 cm. What is the mass of this solid sample?
B Eagle chick survival is directly related to annual rainfall amounts.
C Mortality of eagles from pesticides after 1992 was less than 5%.
D An outbreak of disease in 1987 killed 82% of the eagle population.
25
.
A scientist observes
that a species of insect appears to be more
28. The accept mass of Magnesium chloride is 8.6 grams. The expected mass in a referenced text is 10.5
numerous during dry summers than during wet summers. Which is the
grams. What is your percent error? Express your answer to the 100th place and label).
next step to determine an explanation of this phenomenon?
A Develop a hypothesis
B Publish the observation
C Present a theory in a scientific journal
D Observe the species in the winter
29a. What is the dependent variable in this experiment?
26
.
b. What is the dependent variable (DV) in the experiment? __________
c. Which of the following best describes the graph? Circle one answer.
directly proportional
inversely proportional
both directly and inversely proportional
neither directly or inversely proportional 30.
An unknow
solid
has a density
What is
the dependent
variable n
in this
experiment?
A Time
W hat is the m ass of this solid
B Car
C Acceleration
D Speed
of 8.9 g/cm3 and a volum e of 4.04 cm 3 .
31. In an experim ent you perform ed the m ass you obtained is 5.4
gram s. According to M r JZ, the accepted value of the Sam ple w as 5.9
gram s. W hat is your percent error?
( Round your answer to the 100th place and label).
.
8 of 18
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2 Name_______________________________________ Date received___________________ Blk__________ Unit 1 CHEMISTRY Test STUDY GUIDE TEST DATE:_________________________ 32. Your drive from H am pton to York Tow n is 8.090 kilom eters. H ow
m any centim eters did you travel? W rite your answ er in scientific
notation.
33. The speed of light is 3.00x10 9 meters . W hat w ould the speed of light be
in centimeters ?
second
milliseconds
3