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WorksheetsQ3_Summative Test_2
Total questions: 15
Worksheet time: 12mins
Which of the following contain the positive and neutral charged subatomic particles and known as the most massive part of an atom?
Electron
Neutron
Nucleus
Proton
An electron is in a region outside the nucleus. How will you describe an electron?
It has a positive charge
Is larger than a proton and has no charge
Is smaller than a proton and has no charge
It has less mass than a proton and has a negative charge
What subatomic particle has a positive charge?
Electron
Neutron
Nucleus
Proton
Which subatomic particle corresponds to the atomic number of an element?
Electron
Neutron
Nucleon
Proton
What do you call an atom with the same number of protons and electrons?
Charged Atom
Ion
Isotope
Neutral Atom
Which of the following is TRUE about the atomic mass or mass number of an element?
It is the sum total of the number of protons and neutrons.
It is the sum total of the number of protons and electrons.
It is the sum total of the number of neutrons and electrons.
It is the sum total of the masses of the three subatomic particles.
How many neutrons are there in the element of an Aluminum?
13
14
27
40
How many protrons are there in the element of an Aluminum?
13
14
27
40
Whose work led to a periodic table based on an increasing atomic number?
Dmitri Mendeleev
Henry Moseley
Johann Dobereiner
John Newlands
Who classified the known elements into eight groups?
Dmitri Mendeleev
Henry Moseley
Johann Dobereiner
John Newlands
What do you call the horizontal row of elements in a periodic table of elements?
Group
Family
Period
Column
How many groups/family and period does a Periodic Table have?
There are 17 groups/family and 7 periods
There are 18 groups/family and 7 periods
There are 7 groups/family and 18 periods
There are 18 groups/family and 6 periods
Which of the following are the three major groups of elements in the periodic table?
Metals, non-metals, metalloids
Metals, conductors, metalloids
Metals, conductors, insulators
Non-metals, conductors, insulators
In which area of the periodic table does the carbon and other non-metals can be found?
On the left side
In the bottom rows
On the right side
In the middle part
Why do the elements fluorine, chlorine and the other four elements were included in the group of Halogens?
Because they are all radioactive and consist of the heavier members being extremely unstable.
Because they are all odorless, colorless, monatomic gases with very low chemical reactivity.
Because they are salt-producing elements capable of existing in three of the four main states of matter at room temperatures.
Because they have high thermal and electrical conductivity and react violently with water that form strong bases capable of neutralizing acids.
