Chemistry 110 - Elements of General Chemistry » Spring 2023 » Chapter 4 Quiz

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Question #1
Which statement below accurately describes the contributions of Dalton?
A.   none of these
B.   ancient Greek philosopher who proposed that matter was continuous
C.   proposed the modern Atomic Theory
D.   discovered the existence of electrons
E.   created the modern periodic table
Question #2
Which of the following is NOT part of Dalton's Atomic Theory?
A.   Each element is composed of tiny indestructible particles called atoms.
B.   Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
C.   Atoms combine in simple, whole-number ratios to form compounds.
D.   All of these are part of the atomic theory.
E.   All atoms of a given element have the same mass and other properties that distinguish them from the atoms of other elements.
Question #3
Which statement below is NOT consistent with the nuclear theory of the atom as proposed by Rutherford?
A.   There are as many electrons outside the nucleus as there are protons inside the nucleus in a neutral atom.
B.   Most of the volume of the atom is empty space occupied by tiny, negatively charged electrons.
C.   Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.
D.   All of these statements are consistent.
E.   Electrical charge is a fundamental property of protons and electrons.
Question #4
Which of the following statements about the nature of electrical charge is FALSE?
A.   Positive-positive or negative-negative charges repel each other.
B.   Positive and negative charges cancel each other so that a proton and electron, when paired, are charge neutral.
C.   All of these statements are true
D.   Electrical charge is a fundamental property of protons and electrons.
E.   Positive and negative electrical charges attract each other.
Question #5
Which of the following is NOT a correct name, symbol combination?
A.   manganese, Mn
B.   potassium, P
C.   chromium, Cr
D.   gold, Au
E.   calcium, Ca
Question #6
How many protons and neutrons are in Cl-37?
A.   20 protons, 17 neutrons
B.   17 protons, 37 neutrons
C.   37 protons, 17 neutrons
D.   17 protons, 20 neutrons
E.   none of these
Question #7
A fictional element has two naturally occurring isotopes with the natural abundances shown here: ATOMIC MASS (AMU) / ABUNDANCE 16 / 50.0% 18 / 50.0% Which statement is TRUE for this element?
A.   The atomic mass would be 17.
B.   The atomic mass would be less than 16.
C.   The atomic mass would be more than 18.
D.   The atomic mass would be 18.
Question #8
An isotope represented as S-34:
A.   none of these
B.   has 34 protons.
C.   is an isotope of sodium.
D.   must have exactly 18 electrons.
E.     
F.   contains exactly 18 neutrons.
Question #9
Which of the following statements about ions is INCORRECT?
A.   Cations always have the same number of protons as electrons.
B.   Cations are formed when an atom loses electrons.
C.   Cations are positive ions and anions are negative ions.
D.   All statements are correct.
E.   Anions are formed when an atom gains electrons.
Question #10
Which of the following statements about atoms is FALSE?
A.   All of these statements are true.
B.   Atoms compose all matter.
C.   Atoms are responsible for the sensation of smell.
D.   An atom is the smallest identifiable unit of an element.
E.   Atoms are the basic building block of nature.
Question #11
Which of the following elements has an atomic number of 4?
A.   Be
B.   C
C.   none of these.
D.   H
E.   He
Question #12
How many protons are in the nucleus of an atom of bromine?
A.   none of these.
B.   35
C.   45
D.   79
E.   80

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