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WorksheetsThe Periodic Table
Total questions: 24
Worksheet time: 12mins
The order of elements in the periodic table is based on
the number of protons in the nucleus.
the electric charge of the nucleus.
the number of neutrons in the nucleus.
atomic mass.
Atoms of elements that are in the same group have the same number of
protons.
neutrons.
valence electrons.
protons and neutrons.
Which of the following elements is an alkali metal?
calcium
magnesium
mercury
sodium
In Mendeleev's periodic table, elements in each column had similar
atomic masses.
properties.
atomic numbers.
symbols.
How was Mendeleev's periodic table arranged?
by increasing atomic mass
by decreasing atomic mass
by increasing atomic number
by decreasing atomic number
Mendeleev left gaps in his periodic table because
the table was too small.
protons belonged there.
the table was too full.
no known elements fit there.
Each column of the periodic table is
an element.
a group.
an isotope.
a period.
The three main groups of elements are metals, nonmetals, and
inert gases.
alkali metals.
radioactive isotopes.
semiconductors/metalloids.
Most elements are
metals.
nonmetals.
metalloids.
semiconductors.
Elements in an elemental family have similar
atomic symbols.
atomic sizes.
atomic weights.
chemical properties.
The order of elements in the modern periodic table is based on an element's
atomic number.
name.
chemical symbol.
atomic mass.
Which statement about the alkali metals is correct?
They are located in the left-most column of the periodic table.
They are extremely nonreactive.
They are usually gases.
They form negative ions with a 1- charge.
Which group is very stable due to the fact that they have a full outermost energy level?
alkali metals
halogens
alkaline-earth metals
noble gases
Which of the following is a property of group 18 elements?
malleable
brittleness
high electrical conductivity
unlikely to react with other elements
Based on its location on the periodic table, which of these elements most likely has physical and chemical properties most similar to boron (B)?
magnesium (Mg)
aluminum (Al)
neon (Ne)
chlorine (Cl)
Which of the following groups on the Periodic Table is likely to form positively charged ions (or cations)?
group 1
group 13
group 17
group 18
Which of the following elements would most likely be a shiny, gray-colored solid at room temperature, conduct electricity, and dent when hit with a hammer?
argon (Ar)
chlorine (Cl)
sulfur (S)
aluminum (Al)
Alkali metals are extremely reactive because they
have every small atomic masses.
are not solid at room temperature.
have one valence electron that is easily removed to form a positive ion.
have two valence electrons that form compounds with calcium and magnesium.
Which pair of elements would most likely have similar properties?
Calcium (Ca) and cobalt (Co)
sodium (Na) and chlorine (Cl)
boron (B) and phosphorus (P)
oxygen (O) and sulfur (S)
Which two elements are in the same period?
boron (B) and lithium (Li)
beryllium (Be) and calcium (Ca)
phosphorus (P) and oxygen(O)
boron (B) and phosphorus (P)
Which arrow shows the direction of the groups on the
Periodic Table?
The atomic number is the same as
the---
atomic mass
group number
number of protons
period number
What is the atomic mass of
iron (Fe)?
26
13
55.845
23.423
Find the element on Period 3 and Group 17. What is
this element’s chemical symbol?
F
Br
Cl
I
