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General Chemistry 101

written by: Hitch

Have you ever wondered how a car battery works or why certain elements are radioactive? The wonderful world of chemistry has an explanation. From molecular bonding to the periodic table, this quiz will cover college level concepts in general chemistry.

Question 1:

Chemistry is defined as the natural science of matter, dealing with the composition of substances and their properties, reactions and interactions. Which of the following would NOT be an example of a chemical reaction?

the burning of a piece of wood
mixing vinegar and baking soda together
converting liquid water to gaseous steam
the rusting of a nail

Question 2:

What term describes the concentration of a solution in moles per liter?

osmosis
diffusion
molarity
molality

Question 3:

pH, or the negative log of the H3O+ (hydronium ion) concentration, is the measure of acidity or basicity of an aqueous solution. Which solution would have the lowest pH at room temperature?

a weak base such as ammonium hydroxide
a strong acid such as sulfuric acid
a weak acid such as acetic acid
a strong base such as sodium hydroxide solution

Question 4:

View the provided image.
The periodic table of the chemical elements, invented by Russian chemist Dmitri Mendeleev in 1869, is a method of displaying the chemical elements in tabular form. The Group VIIA elements are fluorine, chlorine, bromine, iodine and astatine. The common name for this particular group of elements is called what?

noble gases
transition metals
teratogens
halogens

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Question 5:

View the provided image.
An atom is composed of three subatomic particles: the proton, the neutron and the electron. What term describes an atom that differs by the number of neutrons present?

isotope
ion
nucleophile
positron

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Question 6:

View the provided image.
In the chemical world, what is a mole?

term to describe sauces in Mexican cuisine
term for measuring the amount of a substance containing Avogadro's number of entities per substance
term for one who steals patented scientific secrets
term for a small furry mammal that burrows underground

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Question 7:

View the provided image.
The ideal gas law is a combination of Boyle's Law, Charles's Law and Avogadro's Law. What is the mathematical expression of the ideal gas law?

F = (m)(a)
PE = (m)(g)(h)
V = (I)(R)
PV = n(R)(T)

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Question 8:

View the provided image.
The valence-shell electron-pair repulsion theory (VSEPR) is used to predict the shapes of different molecules. It takes into account bonding electron pairs as well as lone pairs of electrons. The water molecule has two bonding pairs (connecting the two hydrogens to one oxygen) and two lone pairs of electrons on the oxygen itself. What term is used to describe the shape of the water molecule?

bent
tetrahedral
linear
see saw

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Question 9:

View the provided image.
A molecule of ethylene contains a double bond between the two carbon atoms. A double bond consists of _____ sigma bond(s) and _____ pi bond(s).

1, 1
2, 0
0, 0
0, 2

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Question 10:

The equilibrium constant expression for a chemical equation is equal to the product concentrations divided by the reactant concentrations. For example, A + B = C + D will give an equilibrium constant = [C][D]/[A][B]. According to LeChatelier's principle, which of the following will affect the equilibrium of a given reaction?

all of these will affect equilibrium
changing the volume or pressure
changing the concentration of a reactant or a product
increasing the temperature

Question 11:

In the Bronsted-Lowry acid-base classification, an acid is defined as a proton donor and a base is a proton acceptor.

True
False

Question 12:

View the provided image.
An electrochemical reaction is a chemical reaction that produces electricity. It usually involves two half-cells containing different metals suspended in a solvent which generate a current. An automobile battery is an example of this chemical reaction. When an automobile is cranked, it acts as a(n) ____________ cell to start the engine, which is a cell that discharges electricity.

electrolytic
transistor
galvanic
thermodynamic

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