Q3_Summative Test_2

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