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WorksheetsMolecular Composition
Total questions: 20
Worksheet time: 10mins
The charge of a proton is
Negative
Positive
Neutral
Which two subatomic particles are found in the nucleus of an atom?
Protons and Electrons
Electrons and Neutrons
Protons an Neutrons
The atomic mass of an atom is the sum of which two subatomic particles?
protons and neutrons
protons and electrons
neutrons and electrons
The atomic number of an atom is
the mass of an atom
the number of protons added to the number of neutrons
the number of protons
negatively charged
The charge of the neutron is
positive
negative
neutral or no charge
An atom is bigger than an element.
True
False
Elements are made up of many different kinds of atoms.
True
False
An element is made up of all the same type of atom.
True
False
What is the atomic mass of Sodium?
11
34
23
22
How many protons does Sodium have?
22
11
23
34
How many neutrons does Sodium have?
11
14
12
10
The vertical columns on the periodic table are called
rows
periods
groups
The horizontal rows on the periodic table are called
columns
periods
groups
The atoms in a column of the periodic table all have
the same abbreviation
the same number of energy levels
the same number of electrons
the same number of electrons on the outer energy level
In a Lewis Dot Structure, the electrons shown
are in the innermost energy level
are equal to the number of protons
are in the outermost energy level
always add up to an even number
How many electrons can fit on the 3rd shell?
2
4
6
8
How many electrons can fit on the 2nd shell?
2
4
6
8
How many electrons can fit on the 1st electron shell?
2
4
6
8
The octet rule states that
all atoms have the same number of electrons
all atoms want to fill their outer shell with 8 electrons
the valence electrons tell us the chemical properties of an atom
Atoms that do not have a full electron shell are considered unstable.
True
False
