Symbols and Formulas
Process of Science
The Periodic Table
Elements, Compounds, and Mixtures
Separation Techniques
Reaction Terminology
Physical vs Chemical Properties and Changes
Measure It
Conversions
Are These Figures Significant?
Don't Be So Dense
Mole Money, Mole Problems
Miscellaneous
100
magnesium
Mg
100
Decide if the following is an example of inorganic chemistry, organic chemistry, analytical chemistry, biochemistry or theoretical chemistry.
Using mass spectrometry to measure charged particles to determine the composition of a substance.
analytical chemistry
100
What is the atomic number of silver?
47
100
a chocolate chip cookie is an example of a _____
mixture
100
Filtration
100
Find the state of matter of oxygen in the following chemical equation:
2 HgO(s) --> 2 Hg(l) + O2(g)
gas
100
Is the following a physical or chemical property:
nitric acid reacts violently with copper
Chemical Property
100
All measurements taken with this rules would end in which place value and unit?
What is 100ths place and centimeters?
X.XX cm
100
120 g in kg
What is 0.12 kg?
100
The number of sig figs in 0.02050 m
What is 4?
100
The volume of a 73.9 g sample of tin with a density of 7.21 g/cm3.
What is 10.2 cm3?
100
The molar mass of (NH4)2CO3
100
Is the following a physical or chemical change:
A marshmallow roasts over a campfire
Chemical Change
200
potassium
K
200
A student wants to test which kind of food makes hissing cockroaches grow the fastest. They obtain 3 roaches that are the same size, age and the same species. They put the roaches in 3 identical cages in the same room. They give them the same amount of water. They provide the first roach with apples, the second roach with dog food and the third roach with crackers. Then they measure the roaches each day to see how long they are to determine the best diet for cockroach growth.
The roach cages given is the _________________ variable.
control variable
200
List the symbol of an element in group 15
N, P, As, Sb, Bi, or Mc
200
Does the following represent an element, compound, or mixture
NaOH + HCl
mixture
200
Centrifuging
200
Find the reactant(s) in the following chemical equation:
2 HgO(s) --> 2 Hg(l) + O2(g)
HgO
200
Is the following a physical or chemical change:
Na(l) → Na(s)
Physical Change
200
The place value and unit which this graduated cylinder reports volumes
What is the 10ths place and milliliters?
13.0 mL
200
3.28 km in cm
What is 3.28 105 cm?
200
5.81 cm - 0.983 cm = ??
What is 4.83 cm?
200
The density of chromium is 7.19 g/cm3. The volume of a 0.31 kg sample of Cr.
What is 43 cm3?
200
How many atoms are in 0.750 moles of zinc?
200
Determine if the following elements are metals or nonmetals:
zinc (Zn), iodine (I2), strontium (Sr), radon (Rn)
zinc: metal
iodine: nonmetal
strontium: metal
radon: nonmetal
300
phosphorus
P4
300
Label the following statement as observation, hypothesis, experiment or scientific theory:
Many bugs are seen dead at the bottom of the lamp shade.
observation
300
What is the atomic mass of barium?
137.33 amu
300
Does the following represent an element, compound, or mixture
(NH4)2SO4
compound
300
Extraction
300
Find the product(s) in the following chemical equation:
2 HgO(s) --> 2 Hg(l) + O2(g)
Hg and O2
300
Is the following a physical or chemical change:
Rain water evaporates from the pavement
Physical Change
300
What is the length of the object below?
What is 2.29 cm?
or
What is 2.30 cm?
300
You are giving a patient 3.0 cm3/min of a given solution intravenously. If this is done for 24 hours, how many liters of this solution will you need?
4.3 L
300
5.7621 m x 6.901 m x 0.460 m =
18.3 m3
300
A block of copper metal has a mass of 1896 g. The dimensions of the block are 8.40 cm x 5.45 cm x 4.6 cm. What is the density of copper?
9.0 g/cm3
300
Find the mass in 2.6 mol of lithium bromide (LiBr).
300
Is the following a physical or chemical property:
The freezing point of water is 0°C
Physical Property
400
sulfur
S8
400
A scientist is testing which temperature is best for mold growth. He places a sample of black mold in 4 petri dishes (small plastic dishes). He places each sample in a separate dark room and leaves them alone for 2 weeks. The first room is set at 30 degrees. The second room is set at 50 degrees. The third room is set at 70 degrees. The last room is set at 90 degrees. At the end of the 2 weeks, he counts the number of mold spores to see which sample grew the most. What type of variable best describes the statement below?
Which variable is the following: humidity of the room
extraneous variable
400
What is the element name for the element with the atomic number 11. What is its symbol?
name: sodium
symbol: Na
400
Does the picture below represent an element, compound, or mixture?
mixture
400
Distillation
400
Which substance(s) has a coefficient in the following chemical equation, what is the coefficient:
2 HgO(s) --> 2 Hg(l) + O2(g)
HgO and Hg
2
400
Is the following a physical or chemical change:
2NH3(g) ---> N2(g) + 3H2(g)
Chemical Change
400
Determine the volume of the liquid in the graduated cylinder.
What is 328 mL?
(the range 326 - 330. would be acceptable)
400
You are buying carpet to cover a room that measures 39 ft by 40. ft. The carpet cost $18 per square yard. How much will the carpet cost?
$3100
400
896.72 km + 1900 km = ??
What is 2800 km?
400
Aluminum can be sold to chemistry teachers in strips that are 5.00 cm wide and 0.40 cm thick. If a chemistry teacher needs a piece of aluminum that has a mass of 54.0 g, how long a piece would she need to cut? (density of aluminum 2.70 g/cm3)
l= 10. cm
400
How many moles of magnesium is 3.01 x 1022 atoms of magnesium?
400
The percent error of a student who calculated the density of water as 0.98 g/mL when the actual density of water is 1.00 g/mL.
What is 2.0% error?
500
The 7 diatomic elements
Br2 I2 N2 Cl2 H2 O2 F2
500
Label the following statement as observation, hypothesis, experiment or scientific theory:
An object at rest will stay at rest, and an object in motion will stay in motion unless acted on by a net external force.
theory
500
In what period is uranium (#92) located?
7
500
Classify each of the boxes below as one of the following: pure element, pure compound, mixture of elements, mixture of compounds, mixture of elements and compounds
a.
b. 
c.
a. pure compound
b. mixture of elements
c. pure element
500
Sublimation
500
Which substance(s) has a subscript in the following chemical equation, what is the subscript:
2 HgO(s) --> 2 Hg(l) + O2(g)
O2
500
Is the following a physical or chemical change:
Physical Change
500
The temperature reading of the thermometer
What is 19°C?
(Since the thermometer increases by 2°C increments, can only be significant to the ones place)
500
A local zoning ordinance says that a house’s “footprint” (area of its ground floor) cannot occupy more than 25% of the lot it is built on. Suppose you own a 0.33 acre lot (1 acre = 43,560 ft2). What is the maximum allowed footprint for your house in square meters?
330 m2
500
1.31 cm x 2.3 cm =
3.0 cm2
500
The annual production of sodium hydroxide (NaOH) in the United States in 2019 was 54.6 billion liters. The density of sodium hydroxide is 2.130 g/cm3, how many formula units (particles) of sodium hydroxide were produced?
1.75x1036 formula units NaOH
500
While cleaning a cut, you spill a bottle of iodine. The spill contains 1.40x1024 molecules of I2. What mass of the spill?
500
Explain why the mole is necessary.
The grouping atoms/molecules/ions that will relate the amount (number of particles) of a substance to its mass.
Allows chemists to mass particles in a laboratory