Font size
WorksheetsPeriodic Table
Total questions: 25
Worksheet time: 6hrs 1mins
A rule that states that repeating chemical and physical properties of elements change periodically with the atomic number of the elements is the _________.
periodic law
alkaline-earth metals
actinide
group rule
Pure forms of these elements are the most reactive metals on the periodic table and are never found pure in nature.
Alkali Metals
Alkaline-earth metals
Halogens
Noble Gases
Which of these is classified as a halogen?
Helium
Chlorine
Oxygen
Neptune
N2, Cl2, and O2 are all __________. (select two)
diatomic molecules.
ionic bonds.
of equal mass.
covalent bonds.
Muddy water is a _______________?
element
Heterogeneous Mixture
Homogeneous Mixture
Compound
The air we breathe is a/an _________.
element
mixture
compound
energy
This picture shows an example of a/an _____________.
element
mixture
compound
What is the name of this element?
Carbon
Germanium
Sulfur
Oxygen
What is the mass number of this atom?
14
13
27
40
What is the atomic number of this atom?
28
31
59
56
What group does this element belong to?
Group 1: Alkali metals
Group 18: Noble Gases
Group 2: Alkaline-Earth Metals
Group 17: Halogens
This picture would be classified as a/an _____________.
Element
Compound
Mixture
This picture would be classified as a/an _______________.
Element
Compound
Mixture
This picture would be classified as a/an __________.
Element
Compound
Mixture
Is this element a metal, nonmetal, or metalloid?
Metal
Nonmetal
Metalloid
What is the electron configuration of Calcium?
20
[Kr] 4s2
20, 20, 20
2, 8, 8, 2
