WorksheetsPeriodic Table & Electrons
Total questions: 142
Worksheet time: 2hrs 17mins
Elements in a periodic table are arranged from left to right and top to bottom in order of —
increasing specific heat
increasing atomic number
decreasing atomic mass
sum of the number of protons and electrons
The instructions for a lab warned students to avoid putting Na in the liquid used during the experiment. Based on similar properties to Na, what element should also be avoided?
nitrogen
phosphorus
calcium
silicon
Which of the following elements react like selenium (Se) but have a greater atomic mass? Select TWO correct answers.
Tellurium (Te)
Polonium (Po)
Sulfur (S)
Arsenic (As)
oxygen (O)
Which of the following is an Alkali metal?
Na
Be
Fe
Ti
A student is comparing and contrasting two different elements found on the periodic table. The elements being studied are sulfur (S) and chlorine (Cl). Which of the following is an accurate statement the student could make concerning the two elements?
Both of the elements are malleable.
The elements have the same number of valence electrons.
The elements have the same number of energy levels.
Both elements are chemically stable.
Number of negatively charged particles in the electron cloud: ________
17
15
18
20
Number of positively charged particles in the nucleus: ________
17
15
18
20
Number of neutrally charged particles in the nucleus: ________
18
12
8
20
Which of the following statements are true about Thomson's discovery of electron properties? Select TWO correct answers.
A. His experiment showed all atoms have negatively charged particles.
B. He used gold foil to prove electrons are positive.
C. The mass of the proton was measured as part of his experiment.
D. His experiment focused only on neutrons and neutrinos.
E. He used a plum pudding model to demonstrate the structure of an atom.
Luis is practicing drawing Bohr models in his science class. When he finished drawing his Chlorine atom, his teacher asked him how he could identify where the element's chemical reactivity can be found.
The chemical reactivity of an element can be found by looking at the electrons in the outermost shell (valence electrons).
The chemical reactivity of an element can be found by looking at the number of protons in the nucleus.
The chemical reactivity of an element can be found by counting the total number of neutrons.
The chemical reactivity of an element can be found by examining the atomic mass.
A portion of this diagram shows the visible light section of the electromagnetic spectrum. Select which color of visible light has the lowest frequency, and thus, the lowest energy.
Blue
Yellow
Orange
Green
Red
In the electromagnetic spectrum, the energy of violet light is approximately twice that of red light. How does the frequency and wavelength of violet and red light compare? Select TWO correct answers.
The frequency of violet light is sometimes greater and sometimes less than that of red light.
The frequency of violet light is approximately twice that of red light.
The wavelength of violet light is the same as that of red light.
The wavelength of red light is longer than that of violet light.
The frequency of violet light is approximately quadruple that of red light.
Which two factors of the electromagnetic radiation have an inverse relationship?
amplitude and nodes
energy and frequency
frequency and wavelength
wavelength and energy
Which of the following statements is true as the frequency of light waves increases? Select TWO correct answers.
the wavelength increases
the wavelength decreases
the energy increases
the energy decreases
the energy stays the same
Where are the most highly reactive elements found on the periodic table?
Elements in group 1 and group 17 on the periodic table.
The transition metal groups in the middle of the periodic table.
Elements in group 2 and group 16 on the periodic table.
The noble gases in group 18 on the periodic table.
A student drew diagrams of atoms from six different elements. Which of the following atoms are of elements that have similar reactivity?
Atom 4
Atom 3
Atom 5
Atom 1
Atom 2
Which of the following correctly ranks elements in order of decreasing electronegativity?
S > Sc > Se > Sr
Cl > Cd > Ca > Cs
Be > Ca > Mg > Sr
S > P > Cl > Ar
Mendeleev developed the first periodic table in the late 1860s. He ordered the elements by atomic mass, and this led to some elements being out of place.
How did Henry Moseley, in the early 1900's, decided to order the elements?
Enter the correct answer in the box.
(a)
Sodium is commonly used in salt compounds. Which other elements on the periodic table might also be used in a similar compound due to their chemical properties?
Click on elements on the periodic table below and select TWO correct answers.
A group of students created a series of flashcards related to atomic structure. The flashcards are displayed in the table below. Which of the following flashcards contain statements that are true for the nucleus of an atom?
A chemist wants to study three elements that all have the same number of valence electrons. Which of the following elements should the chemist choose as part of their study?
Select THREE correct answers.
Which of the following are true regarding this electron dot structure?
Select TWO correct answers.
It represents an element that is classified as a noble gas.
It represents an element that is from the halogen group.
It represents an element that will readily give an electron away.
It represents an element that will readily accept an electron.
It represents an element that is a metal.
Which of the following is the correct electron configuration for arsenic?
1s2 2s2 2p6 3s2 3d6 4s2 3p10 4d3
1s2 2s2 2p6 3s2 3p6 4s2 3d6 4p6
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3
1s2 2s2 2p6 2d10 3s2 3p6 3d5
The nucleus of an atom has a (a) charge.
positive
negative
neutral
bank
Where is the mass of an atom found?
metalloids
characteristics of both metals and nonmetals
metals
generally shiny, malleable, ductile, and good conductors of heat and electricity
nonmetals
generally dull, brittle, and poor conductors of heat and electricity
groups/family
vertical columns on the Periodic Table that contain elements with similar properties
period
the horizontal rows of elements on the Periodic Table
Silver (Ag) is positioned in Period (a) and Group (b) of the periodic table.
5
11
47
107.87
67
Which group has 2 valence electrons?
Which group has 3 valence electrons?
Which group has 5 valence electrons?
Using the periodic table, how many valence electrons does Magnesium have? (a)
1
2
3
4
5
6
7
8
12
Which group has one valence electron?
Which group has 4 valence electrons?
Which group has 7 valence electrons?
How many valence electrons are in the following elements?
Neon (Ne)
0 or 8
Sodium (Na)
1
Oxygen (O)
6
Magnesium (Mg)
2
Boron (B)
3
Match the periodic table group to the correct number of valance electrons
Group 1
1
Group 2
2
Group 13
3
Group 14
4
Group 15
5
Match the following element with their number of valance electrons?
Lithium
1
Magnesium
2
Boron
3
Tin
4
Nitrogen
5
Matching:
Match the following elements with their corresponding number of valence electrons
1
Hydrogen
2
Magnesium
3
Aluminum
7
Bromine
6
Oxygen
How many valence electrons does the element have?
1
2
3
4
How many valence (outer) electrons does an Oxygen atom have?
2
6
8
16
How many "valance electrons" are in chlorine?
7
2
17
8
The symbols W, X, Y, and Z represent four elements shown on the outline of a periodic table.
Which element has the highest electronegativity?
W
X
Y
Z
The symbols W, X, Y, and Z represent four elements shown on the outline of a periodic table.
Which element has the highest atomic size?
W
X
Y
Z
Which of these elements will have the highest Electronegativity.
Rubidium
Indium
Selenium
Sulfur
The symbols W, X, Y, and Z represent four elements shown on the outline of a periodic table.
Which element has the highest electronnegativity?
W
X
Y
Z
Electronegativity is...
the ability of an atom to attract/ accept electrons
the ability of an atom to lose electrons
the energy required to remove an electron from a specific atom
how easy it is to make friends.
What does it mean if an element has a high electronegativty?
It means that the element has a strong attraction for electrons in a chemical bond.
It means that the element has a high atomic mass.
It means that the element has a neutral charge.
It means that the element has a weak attraction for electrons in a chemical bond.
The most electronegative element on the periodic table is:
Fluorine
Chlorine
Bromine
Helium
Which element has the lowest electronegativity value?
F
Fr
Cl
Cr
The most electronegative element is _____
Fluorine
Francium
Helium
Lithium
Mark the element that has the highest electronegativity
Select which atom should have a higher electronegativity value.
The trend for electronegativity is that when going down a family (group) the energy will (a) . When going across a period (row) the energy will (b) .
decrease
increase
(a) is the tendency of an element to pull (b) towards itself. The elements that demonstrate this best are found in the (c) (d) of the periodic table.
Electronegativity
electrons
top
right
Protonpositivity
Reactivity
protons
neutrons
bottom
left
(a) has the highest electronegativity.
Cl
Al
As you move from down a group on the Periodic Table...
The number of energy levels (a) .
increases
stays the same
decreases
As you move from down a group on the Periodic Table...
The atomic radius (a) .
increases
decreases
stays the same
Match the trend with the correct definition
The strength of attraction between an atom's nucleus and the electrons in that atom.
Electronegativity
The distance from the center of an atom and the furthest electron. This is a measure of an atom's size.
Atomic Radius
The energy required to remove an electron from an atom.
Ionization Energy
The likelihood that that an atom will participate in a chemical reaction
Reactivity
Elements in the same period have the same number of
valence electrons
protons
electrons
energy levels
Which two atoms are elements that belong in period two in the periodic table?
Atom 3 and Atom 4
Atom 1 and Atom 4
Atom 3 and Atom 2
Atom 1 and Atom 2
Identify the group of elements that have similar characteristics.
oxygen, sulfur, selenium
helium, fluorine, hydrogen
sodium, magnesium, aluminum
Which of the following is true?
Electronegativity increases up a group
Atomic Radii increases up a group
Ionization energy increases down a group
Oxidation numbers increase down a group
Match the following element to it's electron configuration
Lithium
1s2 2s1
Boron
1s2 2s2 2p1
Chlorine
1s2 2s2 3p6 3s2 3p5
Nitrogen
1s2 2s2 2p3
Calcium
1s2 2s2 2p6 3s2 3p6 4s2
How many energy shells does Barium (Ba) have?
4
5
6
2
The figure below represents the periodic table and the location of four different elements on the table. A certain element has an electron configuration of 1s22s22p63s23p6.
Which letter in the diagram above represents the position of this element on the periodic table?
X
Y
W
Z
What group does this element belong to?
Group 1: Alkali metals
Group 18: Noble Gases
Group 2: Alkaline-Earth Metals
Group 17: Halogens
What element has the valence shell configuration
3s2 3p2
Al
B
Si
Ga
Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1 when it is in its ground state?
Aluminum, Al
Zinc, Zn
Gallium, Ga
Scandium, Sc
Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d8 when it is in its ground state?
Calcium, Ca
Nickel, Ni
Strontium, Sr
Palladium, Pd
Which is the symbol of the element whose electron configuration is 1s22s22p63s23p64s2
Ca
Li
Rb
Ar
Which periodic table family below has their last, most energetic electron in their electron configuration in the s-block?
Alkaline Earth
Halogens
Noble Gases
Transition Metals
Which element in the periodic table has the highest atomic radius?
Fr
Na
F
Cl
Which of the following elements is most likely to form a +2 ion?
Mg
Cl
Na
Ar
What is the electron configuration for phosphorus (P)?
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p6 3s2 3p6
1s2 2s2 2p6 3s2 3p3
1s2 2s2 2p6 3s2 3p5
What is a positive ion called?
anion
cation
isotope
covalent
What is a negative ion called?
anion
cation
covalent
isotope
How many electrons would a Nitrogen ion gain/lose? If it has 5 valence electrons.
lose 5
gain 5
lose 3
gain 3
What is the ion formed from Sulfur? If it has 6 valence electrons.
S+2
S-2
S+6
S-6
How many electrons would a Calcium ion gain/lose? If it has 2 valence electrons.
lose 1
gain 1
lose 2
gain 2
If an atom loses electrons, the charge will be positive.
true
false
A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?
Br-1
Br+1
Br+7
Br-7
An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.
+2
-2
+3
0
If an element has 3 valence electrons, what charge will likely form on its ion ?
+3
+5
-3
-5
Na has 1 valence electron. It will have a charge of _______
+1
+2
-1
-2
Be has 2 valence electron. It will have a charge of _______
+1
+2
-1
-2
Ca has 2 valence electron. It will have a charge of _______
+1
+2
-1
-2
Al has 3 valence electron. It will have a charge of _______
+3
-3
+2
-2
P has 5 valence electron. It will have a charge of _______
+3
-3
+2
-2
S has 6 valence electron. It will have a charge of _______
-2
-1
+1
+2
Iodine has 7 valence electron. It will have a charge of _______
-2
-1
+1
+2
F has 7 valence electron. It will have a charge of _______
-2
-1
+1
+2
Oxygen has 6 valence electron. It will have a charge of _______.
+1
-1
+2
-2
When an atom loses a valence electron, it becomes a _____________ ion.
positive
negative
neutral
polyatomic
What is the charge of an Ion that has 5 protons and 3 electrons
+2
-1
+1
-2
If Copper LOST an electron what is its charge?
-1
-2
+1
+2
Which element has exactly five valence electrons?
Neon
Nitrogen
Magnesium
Oxygen
What is the electron configuration of Sodium (Na) in its ground state?
1s2 2s2 2p5 3s1
1s2 2s2 2p6 3s2
1s2 2s2 2p6 4s1
1s2 2s2 2p6 3s1
Which of the following elements is located in Period 3 and Group 2 of the periodic table?
Aluminum
Sodium
Magnesium
Calcium
Which of the following elements is a Halogen?
Mg
Na
Cl
Ca
What is the electron configuration for Magnesium (Mg)?
1s2 2s2 2p6 3s2
1s2 2s2 2p6 3s1
1s2 2s2 2p6 3p2
1s2 2s2 2p6 3d2
Which of the following statements best describes the trend in atomic radius as you move from left to right across a period in the periodic table?
Atomic radius increases
Atomic radius decreases
Atomic radius first increases, then decreases
Atomic radius remains the same
What happens to the ionization energy of elements as you move down a group in the periodic table?
It fluctuates randomly
It decreases
It increases
It remains constant
Which element in the following list has the lowest atomic radius?
Potassium
Chlorine
Sodium
Calcium
What is the electron configuration for the element phosphorus (P)?
1s2 2s2 2p6 3s2 3p3
1s2 2s2 2p6 3s2 3p5
1s2 2s2 2p6 3s2 3p1
1s2 2s2 2p6 3s2 3p6
Which group on the periodic table contains elements that are all gases at room temperature?
Group 2
Group 18
Group 17
Group 1
Which element has the electron configuration 1s2 2s2 2p6 3s2 3p5 in its ground state?
Sulfur, S
Chlorine, Cl
Argon, Ar
Phosphorus, P
Which of the following elements is most likely to form a negative ion?
Potassium
Oxygen
Magnesium
Aluminum
What is the trend in atomic radius as you move down a group in the periodic table?
It decreases
It remains the same
It increases
It first increases then decreases
In the electromagnetic spectrum, which of the following is true of waves with long wavelengths?
They have high frequencies
They have low frequencies
They have moderate frequencies
They have inconsistent frequencies
Sunscreen bottles often include the phrase: “Protects against UVA and UVB waves.” This refers to ultraviolet radiation coming from the sun. Which of the following is true of ultraviolet radiation?
Ultraviolet radiation has shorter wavelengths than x-rays, therefore it is more dangerous than xrays.
Ultraviolet radiation has longer wavelengths than infrared light, therefore it is more dangerous than infrared light.
Ultraviolet radiation has shorter wavelengths than visible light, therefore it is more dangerous than visible light.
Ultraviolet radiation has longer wavelengths than gamma radiation, therefore it is more dangerous than gamma radiation.
The full range of energy in sunlight can be described as
ATP
Visible Light
Electromagnetic Radiation
Ultraviolet Light
What part of the electromagnetic spectrum can be seen by humans?
Visible Light
Microwaves
Ultraviolet Waves
Infrared Waves
Which feature best distinguishes one form of electromagnetic energy from another?
Color
Wavelength
Surface Temperature
Distance Traveled
Which has a higher frequency?
Wave N
Wave O
Same frequency
There is no frequency
The distance between E and H is called
Crest
Wavelength
Amplitude
Frequency
Our eyes detect light that lies only within a small region of the electromagnetic spectrum. This region is called visible light. Which of these statements describes the visible spectrum of light as seen by the human eye?
The lowest frequency appears red, and the highest frequency appears violet.
The lowest frequency appears green, and the highest frequency appears red.
The lowest frequency appears blue, and the highest frequency appears orange.
The lowest frequency appears yellow, and the highest frequency appears green.
The electromagnetic spectrum is made up of bands of waves with different _____
Speeds
Frequencies
Reflections
Mediums
How does the hazard level of electromagnetic waves change as the frequency of the waves increases?
Energy and wavelength increase; it becomes more hazardous.
Energy and wavelength decrease; becomes less hazardous.
Energy decreases, wavelength increases; it becomes less hazardous.
Energy increases, wavelength decreases; it becomes more hazardous.
Electromagnetic waves come in many different wavelengths. Shorter wavelengths carry more energy and penetrate further through materials. People wear sunblock to prevent UV waves from damaging their skin cells. Which kind of wave has enough energy to pass through skin and damage cells on the inside of the body?
Visible Light
Infrared
Gamma Rays
Radio Waves
Meg is barbequing hamburgers on the grill. She notices that the coals are ready for cooking because she feels the warmth of the coals and sees that they are glowing red. What types of electromagnetic waves is she detecting?
infrared waves and visible light waves
gamma rays and infrared waves
visible light and ultraviolet waves
ultraviolet waves and gamma rays
Electromagnetic radiation is energy that travels in waves. Two types of electromagnetic waves are microwaves and gamma rays. Gamma rays have a shorter wavelength than microwaves. Which of these statements is true?
Gamma rays travel faster than microwaves in a vacuum.
Gamma rays have more energy than microwaves do.
Gamma rays have a lower frequency than microwaves do.
Gamma rays, but not microwaves, can travel through a vacuum.
Label the electromagnetic Spectrum
X-rays
Visible Light
Ultraviolet
Radio Waves
Gamma Rays
Infrared Waves
Microwaves
