WorksheetsUnit 1 Quiz: Atomic Structure & Periodic Table
Total questions: 28
Worksheet time: 19mins
Name
Class
Date
1.
The smallest particle of an element that retains its identity in a chemical reaction is a
a)
proton
b)
neutron
c)
atom
d)
compound
2.
With which of these statements would John Dalton have agreed in the early 1800's?
a)
Atoms are the smallest particles of matter.
b)
The mass of an iron atom is different from the mass of a copper atom.
c)
Every atom of silver is identical to every other atom of silver.
d)
A compound is composed of atoms of two or more different elements.
e)
All of the above
3.
Describe the location of the electrons in Thomson´s ¨plum-pudding¨ model of the atom.
4 lines
4.
Protons are subatomic particles that have __________ electrical charge.
a)
positive
b)
neutral
c)
negative
5.
Neutrons are subatomic particles that have __________ electrical charge.
a)
positive
b)
neutral
c)
negative
6.
Electrons are subatomic particles that have __________ electrical charge.
a)
positive
b)
neutral
c)
negative
7.
Protons are subatomic particles found
a)
in the nucleus
b)
around the nucleus
8.
Neutrons are subatomic particles found
a)
in the nucleus
b)
around the nucleus
9.
Electrons are subatomic particles found
a)
in the nucleus
b)
around the nucleus
10.
What is the atomic number of silicon (Si)?
4 lines
11.
What is the average atomic mass of chlorine (Cl)?
4 lines
12.
The ____________ is equal to the number of protons in the nucleus of an element.
a)
mass number
b)
atomic number
c)
atomic mass
13.
Which of the following information can you figure out from a neutrally charged element's ATOMIC NUMBER?
a)
number of protons
b)
number of neutrons
c)
number of electrons
d)
atomic number
14.
The ____________ is the number of protons plus the number of neutrons in the nucleus of an element.
a)
mass number
b)
atomic number
c)
isotope
15.
How many PROTONS are in Boron (B)? Explain how you got your answer.
4 lines
16.
How many NEUTRONS are in Fluorine-19? Explain how you got your answer.
4 lines
17.
How many ELECTRONS are in a neutrally charged Magnesium (Mg)? Explain how you got your answer.
4 lines
18.
Isotopes of a given element differ in the number of
a)
protons
b)
electrons
c)
neutrons
19.
Thallium has two isotopes, thallium-203 and thallium-205. Thallium's atomic number is 81, and its atomic mass is 204.38. Which statement about the thallium isotopes is true?
a)
There is more thallium-203 in nature.
b)
Atoms of both isotopes have 81 protons.
c)
Thallium-205 atoms have fewer neutrons.
d)
The most common atom of thallium has a mass of 204.38.
20.
Which atom is composed of 17 protons, 17 electrons, and 18 neutrons?
a)
Sulfur
b)
Chlorine
c)
Argon
21.
The horizontal row of the periodic table is called a
a)
period
b)
group
c)
noble gas
22.
Each vertical column of the periodic table is called a
a)
period
b)
group or family
c)
noble gas
23.
All the elements in a group have the same number of
a)
protons
b)
valence electrons
c)
neutrons
24.
How did Moseley's way of arranging the elements in the periodic table differ from Mendeleev's arrangement?
4 lines
25.
Use the periodic table to find the period and group for CARBON (C).
a)
Period 2, Group 4A
b)
Period 2, Group 8A
c)
Period 3, Group 1A
26.
Use the periodic table to find the period and group for NEON (Ne).
a)
Period 2, Group 4A
b)
Period 2, Group 8A
c)
Period 3, Group 1A
27.
Use the periodic table to find the period and group for SODIUM (Na).
a)
Period 2, Group 4A
b)
Period 2, Group 8A
c)
Period 3, Group 1A
28.
How many valence electrons does NITROGEN (N) have?
a)
2
b)
5
c)
7
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