WorksheetsReview Unit 02 Periodic Table
Total questions: 50
Worksheet time: 13hrs 30mins
Which of the following scientists’ major contribution was based on the arrangement of elements by their properties?
Dmitri Mendeleev
Niels Bohr
Marie Curie
Isaac Newton
Classify the following as either a metal, metalloid or a nonmetal:
1. Si
2. Na
3. Al
1: Metal 2: Non-metal 3: Metal
1: Metal 2: Metal 3: Metalloid
1: Metalloid 2: Metal 3:Metal
1:Non-metal 2: Non-metal 3: Non-Metal
Which of these elements, based on the location within the periodic table, is considered a metalloid?
blue
green
yellow
don't know I'm colored blind
Mendeleev organized his periodic table in order of increasing atomic —
mass
number
radius
stability
The _ of an atom is the same as the number of protons in its nucleus.
atomic mass
atomic #
The _ of an element is the average mass of that element's varied isotopes.
atomic mass
atomic #
The _ is a chart containing information about the elements (atoms) that make up matter.
periodic table
atomic #
atomic mass
Bohr model
A(n) _ is a substance containing only one type of atom.
element
compound
electron
ion
The periodic repetition of properties of the elements, when arranged by increasing atomic number, is known as what?
periodic law
ionization
atomic radii
quadratic formula
Which of these is the correct atomic mass & atomic # for K (potassium).
24
12
23
11
40
20
39
19
Using his periodic table, Mendeleev was able to —
discover new elements
form new types of matter
create artificial elements
predict unknown elements
Which statement provides an explanation for the high reactivity of the alkali metal group?
Select TWO correct answers.
Alkali metals are easily ionized.
Alkali metals are negatively charged.
Alkali metals have a full outer shell of electrons.
Alkali metals have large atomic radii.
Alkali metals have more electrons than protons.
Which of the following elements are alkali metals?
Select TWO correct answers.
Ge
Fr
H
Tc
K
The _ are nonmetallic, highly reactive, and form various salts in compounds.
halogens
alkali metals
alkaline metals
noble gases
The _ are the highest in conductivity, luster, ductility, and malleability.
alkali metals
alkaline metals
halogens
noble gases
The _ can not form compounds and are unreactive.
alkali metals
alkaline metals
halogens
noble gases
Which of these are the least reactive, based on their number of valence electrons?
Group 14
Group 15
Group 16
Group 17
Group 18
Which of these elements, based on its location within the periodic table, has the properties of a true nonmetal to include dullness, brittleness, and poor conductivity?
Group 17
Group 1
Group 13
Group 14
What are some characteristics of noble gases?
Select TWO correct answers.
Noble gases belong to group 18 of the periodic table.
Noble gases are not reactive with other elements.
Noble gases are highly reactive and good conductors of electricity.
Noble gases all have two valence electrons.
Noble gases have a single electron in the outermost shell.
Which of these elements is the most reactive?
potassium
calcium
scandium
titanium
Which of the following elements have the greatest atomic radius?
Select TWO correct answers.
Ba
Al
He
Cs
Be
Select the TWO elements that have the lowest first ionization energy.
K
Be
Cs
Cu
He
Which of these statements accurately describes a trend in atomic radii in the periodic table?
Select TWO correct answers.
The atomic radius decreases as you go from right to left across a period.
The atomic radius increases as you go from right to left across a period.
The atomic radius decreases as you move down a group.
The atomic radius increases as you move down a group.
The atomic radius remains the same as you go from right to left across a period.
Which element has the lowest ionization energy, based on its position in the periodic table?
Na
Al
P
Cl
He
Which of these statements is an accurate description of the ionization energies of elements in the periodic table?
The ionization energy of lithium is greater than potassium.
The ionization energy of iodine is greater than fluorine.
The ionization energy of magnesium is greater than sulfur.
The ionization energy of krypton is greater than neon.
Which element has the largest atomic radius?
A
B
C
D
Which of these elements is the most electronegative?
argon
chlorine
phosphorus
sulfur
What is this?
A mixture
A compound
An element
A Solution
Argon (Ar is one)
metal
nonmetal
metalloid
Noble gasses are made up of which of the following classes of elements?
Metals
Nonmetals
Metalloids
Not enough information to answer the question
Arsenic is an example of (a)
At room temperature metals are generally ____________.
plasma
gases
liquid
solid
From his Gold Foil Experiment he concluded that the atom is mostly empty space with tiny, positively charged, dense center he called the nucleus.
Ernest Rutherford
Joseph Louis Proust
Henry Moseley
Concluded the atom had negatively charged particles that he named electrons.
Joseph Louis Proust
Quantum Theory
J.J. Thomson
Developed the atomic number as a way of identifying the identity of the element.
Henry Moseley
J.J. Thomson
Max Planck
What does electronegativity mean?
ability to increase energy levels
ability to react with elements
ability to attract electrons
In the halogen family, which element is the most electronegative?
iodine, I
fluorine, F
chlorine, Cl
helium, He
Looking at period 3, which element has the smallest atomic radius?
Mg
Cl
Al
What idea is this cartoon showing?
chlorine is more electronegative than hydrogen
chlorine has more energy levels than hydrogen
hydrogen is more electronegative than chlorine
Which of the following elements is the most electronegative?
Hydrogen, H
Aluminum, Al
Oxygen, O
Cesium, Cs
When was the original periodic table created?
1959
400 B.C
1869
1776
How many elements did Dmitri predict?
1
20
4
17
