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Chemistry Chapter 4 Review Flashcards | StudBud
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Chemistry Chapter 4 Review
Chemistry Chapter 4 Review
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Chapter 4 review quiz
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1
Of Dalton's ideas, which turned out to be incorrect?
Matter is composed of tiny particles called atoms
Chemical reactions result in atoms being rearranged
Atoms are indivisible and indestructible
Atoms of an element differ from atoms of another element
2
Which of the answers below describes the mass of each subatomic particle?
Proton (1 amu); Neutron (1 amu); Electron (0 amu)
Proton (1 amu); Neutron (1 amu); Electron (0.5 amu)
Proton (2 amu); Neutron (2 amu); Electron (1 amu)
Proton (1 amu); Neutron (1 amu); Electron (1 amu)
3
What model of the atom called the "plum pudding model" was described by:
John Dalton
Robert Millikan
J.J. Thompson
Democritus
4
A zirconium isotope has 40 electrons and 50 neutrons. What is the mass number, and # protons?
mass number: 90 amu; # protons: 50
mass number: 40 amu; # protons: 50
mass number: 90 amu; # protons: 90
mass number: 90 amu; # protons: 40
5
Choose the best answer that describes the subatomic particles in an atom and their charges
Proton (0); Electron (+); Neutron (-)
Proton (+); Electron (-); Neutron (0)
Proton (+); Neutron (+); Electron (-)
Proton (-); Neutron (0); Electron (+)
6
How many electrons, protons, and neutrons are contained in the atom in the image?
Electrons: 92; protons: 92; Neutrons: 146
Electrons: 92; protons: 92; Neutrons: 238
Electrons: 146; protons: 92; Neutrons: 146
Electrons: 238; protons: 330; Neutrons: 330
7
Silver has 2 naturally occurring isotopes (see table). Calculate the atomic mass.
106.55 amu
105.34 amu
107.87 amu
108.00 amu
8
What makes up most of the volume of an atom?
Electrons
Neutrons
Protons
Empty space
9
Chlorine's atomic number is 17 amu. If the mass number is 37 amu, how many neutrons are there?
17
27
20
37
10
In the image below, what does each number represent?
6 is the atomic mass, 3 is the number of neutrons
6 is the atomic number; 3 is the mass number
6 is the mass number; 3 is the atomic number
6 is the number of neutrons, 3 is the atomic mass
11
The average atomic mass is an average mass, with the weight based on:
abundance
mass
number of electrons
identity of the element
12
Whose work is credited with being the beginning of modern atomic theory?
Niels Bohr
J.J. Thompson
John Dalton
Aristotle
13
Gallium (Ga), atomic mass 69.7 amu, has 2 isotopes (Ga-69, Ga-71). Which is more abundant?
Ga-71
Ga-69
14
An isotope of mercury has 80 protons and 120 neutrons. What is the mass number of the isotope?
120 amu
9,600 amu
200 amu
40 amu
15
Look at the image. Do the entries represent isotopes of carbon?
Yes
No
16
According to the Law of Conservation of Mass, which of the following answers is NOT true?
In chemical reactions product mass equals reactant mass
In any chemical change, mass is conserved.
% by mass stays the same regardless of sample size
10 g Ca reacts with 4 g O2 to form 14 g CaO
17
Given the data for chromium's 4 naturally occurring isotopes, calculate chromium's atomic mass.
51.99 amu
53.94 amu
52.96 amu
49.01 amu
