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WorksheetsChemistry I - Final Exam Review
Total questions: 60
Worksheet time: 46mins
A pure substance made of only one type of atom is called a(n) (a) .
A pure substance made of two or more elements is called a(n) (a) .
(a) are the smallest units of covalent (molecular) compounds.
The components in a mixture are chemically combined.
True
False
Homogeneous mixtures are also known as solutions.
True
False
Which of the following is an example of a homogeneous mixture?
cereal and milk
amoxicillin suspension
box of Legos
air
pizza
Which of the following is not a physical property of matter?
density = 1.0 g/mL
yellow precipitate
ability to oxidize
boiling point = 373 K
rough texture
Which of the following is an example of a chemical change?
iron rusting
splitting wood
melting wax
dissolving salt in water
condensation
Which of the following scientists were responsible for the development of the periodic table?
Ernest Rutherford
John Dalton
Amadeo Avogadro
JJ Thomson
Dimitri Mendeleev
A horizontal row in the periodic table is known as a(n) (a) .
Elements in the same group have similar properties.
True
False
Which of the following types of elements are characterized by being shiny, malleable, and good conductors of heat and electricity?
Metals
Metalloids
Nonmetals
Fluorine is an example of which of the following types of elements?
Metalloid
Alkali Earth Metal
Halogen
Transition metal
Noble gas
How many sig figs are in 0.0460 m?
(a)
Three pieces of string had the following lengths: 10.1 cm, 12.25 cm, and 9.375 cm. The combined length of the three measurements, expressed to the correct number of sig figs, should be recorded as (a) .
A quality control chemist at a pharmaceutical company was asked to check the accuracy and precision of three different machines used to dispense cough syrup into storage bottles. He ran five (5) trials for each machine. The first machine dispensed different volumes of cough syrup each time, but the average volume from the five trials was equal to the accepted volume of 296 mL. Which of the following best describe these results?
accurate, but not precise
precise, but not accurate
both accurate and precise
neither accurate nor precise
not enough information is provided
An atom of zinc has an atomic number of 30 and a mass number of 65. How many electrons would be found in an atom of zinc?
(a)
How many electrons are present in the calcium ion?
(a)
In what block of the periodic table would you find molybdenum?
s
p
d
f
h
What sublevels would you find in an energy level described by the principal quantum number of n=4?
s
p
d
f
h
How many valence electrons would an atom of nitrogen have?
(a)
Which of the following elements does not exist as a naturally occurring, diatomic molecule?
nitrogen
hydrogen
phosphorus
oxygen
chlorine
You are creating a Lewis structure having a triple bond between two carbon atoms. How many pairs of electrons would you find shared between these two carbon atoms?
(a)
Which of the following is an example of an intermolecular force?
metallic bond
ionic bond
covalent bond
hydrogen bond
covalent-network bond
What is the molecular geometry for a molecule of methane, which consists of one (1) carbon atom and four (4) hydrogen atoms?
bent
trigonal pyramidal
linear
tetrahedral
trigonal bipyramidal
What is the correct name for LiOH?
(a)
What is the chemical formula for hydroioidic acid?
(a)
What is the correct name for NO?
(a)
What is the chemical formula for potassium bromide?
(a)
What is the correct name for NiO
(a)
A solid that forms as a result of a double displacement reaction is referred to as a(n) (a) .
A solution where water is used as a solvent is known as a(n) (a) solution.
Which of the following are products resulting from combustion of a hydrocarbon?
carbon dioxide
oxygen
water
methane
hydrogen
Will magnesium displace barium during a single displacement reaction?
Yes
No
A temperature is reported as 34.5 degrees Celsius. What is this temperature in Kelvins?
(a)
Convert 0.970 atm to mmHg.
(a)
Convert 14.51 g of water to moles of water.
(a)
What is the molarity of a solution containing 0.500 mol HCl in 4.00 L of solution?
(a)
Acids contain a higher concentration of hydronium ions than hydroxide ions.
True
False
For gases, solubility increases with an increase in temperature.
True
False
A solution with a pH of 10.5 would be considered a(n) (a) .
The pH of Cherry Coke is 2.38. What is its pOH?
(a)
The hydronium ion concentration of a solution is 1.0 x 10-3 M. What is its pH?
(a)
Water can exist as a solid, liquid, and a gas.
True
False
Strong acids do not fully ionize in water.
True
False
According to Charles' law, the volume of a gas will increase as the temperature of the gas also increases and pressure remains constant.
True
False
Which of the following scientists are credited with the "plum pudding" model of the atom?
Ernest Rutherford
John Dalton
Amadeo Avogadro
JJ Thomson
Dimitri Mendeleev
Which of the following scientists are credited with discovering the positively-charged nucleus of an atom through his "gold foil experiment"?
Ernest Rutherford
John Dalton
Amadeo Avogadro
JJ Thomson
Dimitri Mendeleev
Gases tend to have a higher density as compared to solids and liquids.
True
False
According to the kinetic molecular theory of gases, most gases are not ideal gases.
True
False
Which of the following types of elements are generally unreactive?
alkali metals
transition metals
metalloids
halogens
noble gases
Units of mL, cm cubed, L, gal, etc. are all units of (a) .
Which of the following atoms would most likely form an anion?
sodium
magnesium
silver
oxygen
zinc
(a) are positively-charged ions formed by the loss of electrons from a neutral atom.
A solution capable of dissolving more solute is best described as (a) .
Intramolecular forces are those forces of attraction within a molecule or formula unit of a covalent or ionic compound, respectively.
True
False
Solutions capable of conducting an electric current due to the complete dissolution of the solute into negatively-charged and positively-charged ions are called (a) .
Which of the following choices is not a characteristic of a base?
[H3O+] < [OH-]
taste sour
feel slippery
pH = 7.1-14
turn red litmus paper blue
A(n) (a) is an acid consisting of hydrogen and a oxyanion (i.e. a polyatomic anion containing oxygen).
The lowest energy state an electron can occupy is it's (a) state.
