WorksheetsChemistry Final Part 1
Total questions: 39
Worksheet time: 20mins
Name
Class
Date
1.
Who proposed the concept of atoms?
a)
Democritus
b)
John Dalton
c)
J.J. Thomson
2.
How did chemists begin to organize the known elements?
a)
By number
b)
By properties
c)
By size
3.
What information can be displayed in a periodic table?
a)
Symbols of elements
b)
Atomic number and atomic mass
c)
All of the above
4.
What are the elements in Group 1A of the periodic table called?
a)
Alkali metals
b)
Alkaline earth metals
c)
Halogens
5.
Which group of elements are referred to as representative elements?
a)
Group 1A through 7A
b)
Group 8A
c)
Transition metals
6.
Which sublevels are completely filled with electrons in the noble gases?
a)
s and p
b)
s and d
c)
p and d
7.
Which elements belong to the d block in the periodic table?
a)
Alkali metals
b)
Halogens
c)
Transition metals
8.
What is the electron configuration for nickel (Ni)?
a)
1s2 2s2 2p6 3s2 3p6 3d8 4s2
b)
1s2 2s2 2p6 3s2 3p6 3d10 4s2
c)
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸
9.
Which block of elements does helium belong to?
a)
s block
b)
p block
c)
d block
10.
What does the group number of a representative element tell you?
a)
Number of electrons in the highest occupied energy level
b)
Number of protons in the nucleus
c)
Number of neutrons in the nucleus
11.
What is the name for the nonmetals in Group 7A of the periodic table?
a)
Alkali metals
b)
Alkaline earth metals
c)
Halogens
12.
What is the name for the elements in Group 2A of the periodic table?
a)
Alkali metals
b)
Alkaline earth metals
c)
Halogens
13.
Which elements are sometimes called the inert gases?
a)
Alkaline earth metals
b)
Halogens
c)
Noble gases
14.
What is the atomic number for aluminum?
a)
13
b)
26
c)
8
15.
Which elements are usually displayed below the main body of the periodic table?
a)
Transition metals
b)
Halogens
c)
Inner transition metals
16.
What is the symbol for silver?
a)
Ag
b)
Al
c)
Au
17.
Which elements are referred to as noble gases?
a)
Group 1A through 7A
b)
Group 8A
c)
Transition metals
18.
Who published a classification system grouping elements into triads?
a)
J. W. Dobereiner
b)
Dmitri Mendeleev
c)
Marie Curie
19.
What is a triad?
a)
A set of three elements with similar properties
b)
A set of three elements with different properties
c)
A set of three elements with the same atomic mass
20.
What did Mendeleev's periodic table predict?
a)
The existence of undiscovered elements
b)
The atomic mass of known elements
c)
The atomic number of known elements
21.
How are elements arranged in the modern periodic table?
a)
In order of increasing atomic mass
b)
In order of increasing atomic number
c)
In order of increasing atomic radius
22.
What are the three broad classes of elements?
a)
Metals, nonmetals, and metalloids
b)
Alkali metals, alkaline earth metals, and transition metals
c)
Noble gases, halogens, and chalcogens
23.
Which class of elements are generally good conductors of heat and electric current?
a)
Metals
b)
Nonmetals
c)
Metalloids
24.
Which class of elements tend to be poor conductors of heat and electric current?
a)
Metals
b)
Nonmetals
c)
Metalloids
25.
What is a metalloid?
a)
An element with properties similar to metals and nonmetals
b)
An element with properties similar to metals only
c)
An element with properties similar to nonmetals only
26.
What is the periodic law?
a)
The repetition of physical and chemical properties of elements
b)
The arrangement of elements in order of increasing atomic number
c)
The classification of elements into groups and periods
27.
Which class of elements has the most variety in physical properties?
a)
Metals
b)
Nonmetals
c)
Metalloids
28.
Which class of elements is generally brittle and shatters if hit with a hammer?
a)
Metals
b)
Nonmetals
c)
Metalloids
29.
How many rows, or periods, are there in the periodic table?
a)
4
b)
6
c)
7
30.
What is the pattern of properties within a period in the periodic table?
a)
Increasing atomic mass
b)
Increasing atomic number
c)
Increasing atomic radius
31.
Where are elements with similar properties found in the periodic table?
a)
Rows (periods)
b)
Columns (groups)
c)
Diagonals
32.
What is the atomic number of hydrogen?
a)
1
b)
2
c)
3
33.
What is the atomic number of helium?
a)
1
b)
2
c)
3
34.
What is the atomic number of carbon?
a)
5
b)
6
c)
7
35.
What is an atom?
a)
The smallest particle of an element
b)
A positively charged subatomic particle
c)
A negatively charged subatomic particle
36.
What did Democritus reason about atoms?
a)
They are indivisible and indestructible
b)
They are positively charged
c)
They are negatively charged
37.
Who transformed Democritus's ideas on atoms into a scientific theory?
a)
John Dalton
b)
J.J. Thomson
c)
Ernest Rutherford
38.
What is the atomic number of an element? Pick 2
a)
The number of protons
b)
The number of neutrons
c)
The number of electrons
d)
The number of protons and neutrons
39.
What are isotopes?
a)
Atoms with the same number of protons but different numbers of neutrons
b)
Atoms with the same number of protons and neutrons
c)
Atoms with the same number of neutrons but different numbers of protons
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