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WorksheetsCHAPTER 4 - Grade 7-The Periodic Table
Total questions: 24
Worksheet time: 12mins
What determines the order of elements on today’s periodic table?
increasing atomic mass
decreasing atomic mass
increasing atomic number
decreasing atomic number
The element key for nitrogen is shown below.
From this key, determine the atomic mass of nitrogen.
7
7.01
14.01
21.01
Which of the following lists of elements forms a group on the periodic table?
. Li, Be, B, C, N, O, F, and Ne
He, Ne, Ar, Kr, Xe, and Rn
B, Si, As, Te, and At
. Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Ni, and Zn
. Which is NOT a property of metals?
. brittleness
conductivity
. ductility
luster
. What are two properties that make a metal a good choice to use as wire in electronics?
. conductivity, malleability
luster, malleability
. malleability, high density
ductility, conductivity
Here are most metals on the periodic table?
on the left side and in the middle
. in the middle only
on the right side only
on the left side only
Determine which element is a metalloid.
carbon
. oxygen
silicon
aluminum
Iodine is a solid nonmetal. What is one property of iodine?
dull appearance
. conductivity
malleability
ductility
The following table lists some information about certain elements in group 17
Which statement describes what happens to these elements as atomic number increases?
Both melting point and boiling point increase.
Melting point decreases and boiling point increases.
Melting point increases and boiling point decreases
Both melting point and boiling point decrease.
Where are most nonmetals located on the periodic table?
in the bottom row
on the right side
on the left side and in the middle
in the top row
Use the figure below to answer question 2
What is the atomic mass of calcium?
20
40.08
40.08 ÷ 20
40.08 + 20
Which element is most likely to react with potassium?
calcium
nickel
sodium
bromine
Which group of elements can act as semiconductors?
halogens
metalloids
metals
noble gases
How do density and atomic mass change as atomic number increases?
Density and atomic mass increase
Density increases and atomic mass decreases.
Density decreases and atomic mass increases.
Density and atomic mass decrease
Which elements have high densities, strength, and resistance to corrosion?
metalloids
alkaline earth metals
alkali metals
transition elements
Which is a property of a metal?
It is brittle
It is a good insulator
It has a dull appearance.
It is malleable.
The figure shows a group in the periodic table. What is the name of this group of elements?
halogens
metalloids
metals
noble gases
Which is a property of these elements?
They are conductors.
They are semiconductors.
They are nonreactive with other elements.
They react easily with other elements
What is one similarity among elements in a group?
atomic mass
atomic weight
chemical properties
practical uses
. The ability of a halogen to react with a metal to form a salt is an example of a ______________ property.
chemical
noble gas
periodic
physical
Which is a chemical property of transition elements?
. reacts little with oxygen
. brightly colored
great ductility
denser than alkali metals
Elements that have the lowest densities of all the metals are called
transition elements
Alkaline Earth M
Lanthanide and Actinide Series
Alkali
What does the decimal number in an element key represent?
. atomic mass
atomic number
chemical symbol
state of matter
Name the scientific term used for columns on the periodic table
group
period
Metals
Nonmetal
