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

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