Properties of Atoms and the Periodic Table
Practice Test
1.
The discovery of the sixth quark was accomplished by __________.
a.
bombarding gold foil with alpha particles
b.
experimenting with a cathode ray tube
c.
studying proton collisions
d.
using the
Hubble Space telescope
Hint
2.
What nineteenth-century English scientist offered proof that atoms existed?
a.
Democritus
b.
John Dalton
c.
Isaac Newton
d.
Aristotle
Hint
3.
A(n) __________ is a method of representing atoms and the electrons in their outer energy levels.
a.
chemical formula
b.
electron dot diagram
c.
chemical equation
d.
chemical symbol
Hint
4.
The atomic number of manganese is 25; its mass number is 55. How many neutrons does an atom of manganese have in its nucleus?
a.
30
b.
25
c.
80
d.
55
Hint
5.
Aristotle believed that matter was __________.
a.
composed of molecules
b.
composed of atoms
c.
uniform throughout
d.
capable of being broken down into smaller parts
Hint
6.
Which of the following atomic particles is electrically neutral?
a.
neutron
b.
electron
c.
positron
d.
proton
Hint
7.
The __________ is a chart created by chemists to organize the elements according to repeated changes on properties.
a.
isotope
b.
mass number
c.
periodic table
d.
metalloid list
Hint
8.
Scientists have broken down protons and neutrons into smaller particles called __________.
a.
quarks
b.
isotopes
c.
nuclei
d.
vacuoles
Hint
9.
Which of the following models of the atom reflects the unpredictable motion of the electron?
a.
electron cloud
b.
ball of raisin-cookie dough with raisins representing electrons
c.
solid ball the same throughout
d.
small ball within a large shell containing empty space
Hint
10.
The name of every element can be abbreviated using a __________.
a.
mass number
b.
chemical symbol
c.
Greek letter
d.
Roman numeral
Hint
11.
__________ are atoms of the same element that have different numbers of neutrons.
a.
Beta particles
b.
Isotopes
c.
Compounds
d.
Alpha particles
Hint
12.
The __________ of an element is the number of __________ of an atom of that element.
a.
atomic number, protons in the nucleus
b.
mass number, neutrons in the nucleus
c.
atomic mass, electrons in the nucleus
d.
mass number, protons plus neutrons in the outermost energy level
Hint
13.
The negatively charged particles outside the nucleus of an atom are __________.
a.
electrons
b.
extracellular material
c.
quarks
d.
neutrons
Hint
14.
Democritus believed that the universe was made of empty space and __________.
a.
elements
b.
compounds
c.
atoms
d.
molecules
Hint
15.
The atomic mass of an element is __________ of that element.
a.
the average mass of an atom
b.
the number of protons in each atom
c.
the number of electrons in each atom
d.
the number of protons plus the number of neutrons of an atom
Hint
16.
Which of the following methods would be most useful for describing atoms?
a.
visualizing with a microscope
b.
constructing a model
c.
observing in a test tube
d.
touching with bare hands
Hint
17.
Which of the following best describes the three general groups of elements?
a.
solid, liquid, and gas
b.
metals, nonmetals, and noble gases
c.
metals, metalloids, and synthetics
d.
metals, metalloids, and nonmetals
Hint
18.
Who formed the first periodic table?
a.
Moseley
b.
Dalton
c.
Mendeleev
d.
Democritus
Hint
19.
Atoms consist of a positively charged center called a(n) __________.
a.
nucleus
b.
electron
c.
proton
d.
neutron
Hint
20.
Which of the following is the correct chemical symbol for carbon?
a.
Ca
b.
Crbn
c.
Car
d.
C
Hint
