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Questions From Exam 1
The study of matter and changes in matter best describes the science of
A. biology
C. microbiology
B. physics
D. chemistry
Chemistry is
A. a biological science C. concerned mostly with living things
B. a physical science
D. the study of electricity
Chemistry may be most useful in studying
A. the movement of asteroids
B. why materials corrode
C. eating habits of ducks
D. streamlining of race cars
The branch of chemistry that includes the study of materials and processes that occur in
living things is
A. organic chemistry
C. analytical chemistry
B. physical chemistry
D. biochemistry
The branch of chemistry that is concerned with the identification and composition of
materials is
A. analytical chemistry C. physical chemistry
B. inorganic chemistry D. organic chemistry
The study of substances containing carbon is
A. organic chemistry
C. nuclear chemistry
B. inorganic chemistry D. analytical chemistry
Basic research is
the production and use of products that improve our quality of life
carried out to solve a problem
the identification of the components and composition of materials
carried out for the sake of increasing knowledge
Matter includes all of the following EXCEPT
A. air
C. smoke
B. light
D. water vapor
Chemical properties
include changes of state of a substance
include mass and color
include changes that alter the identity of a substance
can be observed without altering the identity of a substance
Two features that distinguish matter are
A. mass and velocity
C. mass and volume
B. weight and velocity D. weight and volume
Questions from Exam 2
_______ 5.009 cm
_______ 0.0021 g
_______ 30 000. L
_______ 13.090 dm
_______ 4200 mL
_______ 0.000 000 000 02 kg
Questions from Exam 3
The basic principles of atomic theory that are still recognized today were first conceived by:
A. Avogadro
C. Dalton
B. Bohr
D. Rutherford
An example of the law of multiple proportions is the existence of:
A. FeCl3 and Fe(SO4)3
C. CO and CO2
B. O2 and O3
D. FeCl2 and Fe(NO3)2
Atoms of the same element can differ in:
A. chemical properties
B. mass number
C. atomic number
D. number of protons and electrons
Dalton’s atomic theory helped to explain the law of conservation of mass because it stated
that atoms:
A. could not combine
C. all had the same mass
B. were invisible
D. could not be created or destroyed
In Rutherford’s experiment, a small percentage of the positively charged particles
bombarding the gold’s surface:
A. were slightly deflected as they passed through the metal
B. were deflected back toward the source from the metal
C. passed straight through the metal
D. combined with the metal
Most of the volume of an atom is made up of the:
A. nucleus
C. electron cloud
B. nuclides
D. protons
The law of conservation of mass follows from the concept that
atoms are indivisible
atoms of different elements have different properties
matter is composed of atoms
atoms can be destroyed in chemical reactions
If 4 g of element A combine with 10 g of element B, then 12 g of element A combine with
_________ g of element B.
A. 10
C. 24
B. 12
D. 30
Dalton’s theory essentially agreed with the present atomic theory EXCEPT for the statement
that:
all matter is made up of small particles called atoms
atoms are not divided in chemical reactions
atoms of the same element are chemically alike
all atoms of the same element have the same mass
Experiments with cathode rays led to the discovery of the
A. proton
C. neutron
B. nucleus
D. electron
Questions from Exam 4
The principal quantum number of an electron is 4. What are the possible angular momentum
quantum numbers?
A. ½, -½
C. 0,1,2,3
B. -3, -2, -1, 0, 1, 2, 3
D. 4
What is the total number of electrons needed to fill the fourth main energy level?
A. 4
C. 16
B. 8
D. 32
When ever an excited hydrogen atom falls back from an excited state to its ground state, it
A. absorbs a photon of radiation C. emits radiation over a range of frequencies
B. emits a photon of radiation
D. absorbs specific frequencies of light
Max Planck proposed that a “hot” object radiated energy in small, specific amounts called
A. quanta
C. hertz
B. waves
D. electrons
Which of the following requires that each of the p orbitals at a particular level have one
electron before any of them can have two electrons?
A. Hund’s rule
C. the Aufbau principle
B. the Pauli exclusion principle D. the quantum rule
One of the wave properties of electromagnetic radiation, such as light, is
A. volume
C. mass
B. frequency
D. weight
According to the particle theory of light, certain kinds of light cannot eject electrons from
metals because
A. mass of light is too low
C. energy of light is too low
B. frequency of light is too high
D. wavelength of light is too short
A quantum of electromagnetic energy is called a(n)
A. photon
C. excited atom
B. electron
D. orbital
The wave model of light did not explain the
A. frequency of light
C. interference
B. continuous spectrum D. photoelectric effect
A line spectrum is produced when an electron moves from one energy level
A. to a higher energy level
C. into the nucleus
B. to a lower energy level
D. to another position in the same
sublevel
Exam 5 Questions
In his periodic table, Mendeleev did not always list elements in order of increasing atomic mass
because he wanted to group elements with similar ______ together.
A. properties
C. densities
B. atomic numbers
D. colors
The discovery of the noble gases changed Mendeleev’s periodic table by adding a new ___.
A. period
C group
B. series
D. sublevel block
Moseley discovered that elements with similar properties occurred at regular intervals when the
elements were arranged in order of increasing ____.
A. atomic mass
C. radioactivity
B. density
D. atomic number
Within the p-block element group, the elements at the top of the table ______ than those at the
bottom.
A. have larger radii
C. have lower ionization energies
B. are more metallic
D. are less metallic
Within a group of elements, as the atomic number increases, the atomic radius ____.
A. generally increases
C. decreases regularly
B. remains generally constant
D. decreases, but not regularly
For each electron removed from an atom, the ionization energy ____
A. increases
C. remains the same
B. decreases
D. shows no pattern
The most important property of noble gases is that they are ____.
A. metallic
C. metalloids
B. radioactive
D. unreactive
The number of valence electrons for a group 2 element is
A. 2
C. 12
B. 8
D. equal to the period number
Exam 6 Questions
A mutual electrical attraction between the nuclei and valence electrons of different atoms that
binds the atoms together is called a(n)
A. dipole
C. chemical bond
B. Lewis structure
D. London forces
The electrons involved in the formation of a chemical bond are called
A. dipoles
C. Lewis electrons
B. s electrons
D. valence electrons
As atoms bond with each other, they
increase their potential energy, thus creating less-stable arrangements of matter
decrease their potential energy, thus creating less-stable arrangements of matter
increase their potential energy, thus creating more-stable arrangements of matter
decrease their potential energy, thus creating more-stable arrangements of matter
A chemical bond resulting from the electrostatic attraction between positive and negative
ions is called a(n)
A. covalent bond
C. charged bond
B. ionic bond
D. dipole bond
The chemical bond formed when two atoms share electrons is called a(n)
A. ionic bond
C. Lewis structure
B. orbital bond
D. covalent bond
In which of these compounds is the bond between the atoms a polar bond?
A. Cl2
C. HCl
B. H2
D. O2
A neutral group of atoms held together by a covalent bonds is a
A. molecular formula
C. compound
B. chemical formula
D. molecule
Bond energy is the energy
A. required to break a chemical bond
B. released when a chemical bond breaks
forms
C. required to form a chemical bond
D. absorbed when a chemical bond
The octet rule states that chemical compounds tend to form so that each atom has an octet of
electrons in
A. its highest energy level
C. its d orbitals
B. the 1s orbital
D. its p orbital
The electron configuration of nitrogen is 1s22s22p3. How many more electrons does nitrogen
need to satisfy the octet rule?
A. 1
C. 2
B. 3
D. 5