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 10cm?

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