Subatomic Particles

Determine which of the following subatomic particle is the heaviest?

• Proton

• Neutron

• Electron

• Proton and neutron

Which of the following subatomic particles is located in the nucleus of an atom and has a positive charge?

• Electron

• Neutron

• Proton

• Ion

Which subatomic particles can be found in the nucleus of an atom?

• protons only

• neutrons only

• protons and electrons

• protons and neutrons

Which of the following subatomic particles has no net electrical charge?

• Proton

• Electron

• Neutron

• Ion

Which of the following statements below describes the arrangement of the elements in the Periodic Table of Elements according to its increasing number of atomic number?

• Elements are arranged in vertical columns (groups) with similar chemical properties and horizontal rows (periods) reflecting increasing atomic number.

• Elements are arranged in horizontal rows (periods) with similar chemical properties and vertical columns (groups) reflecting increasing atomic number.

• Elements are arranged randomly, with no correlation between position and atomic number.

• Elements are arranged in a spiral pattern, reflecting increasing atomic mass.

What does the atomic number of an element describe?

• The number of neutrons.

• The number of protons.

• The number of protons and neutrons.

• The number of electrons.

Which of the following statements are FALSE about the subatomic particles?

• The mass of an atom is concentrated at the nucleus.

• Electrons and protons are located within the nucleus.

• Proton has approximately the same mass with neutron.

• The charge of electron is opposite to the charge of proton.

What would happen if an atom loses an electron?

• The atom will become negatively charged because it has lost an electron.

• The atom will become positively charged because it has lost an electron.

• The atom will lose the same number of protons to keep the charge neutral.

• The charge of the atom does not change because an electron has no charge.

Why are atoms considered as electrically neutral?

• It is because all atoms contain neutrons.

• It is because there is an equal number of protons and electrons.

• It is because all subatomic particles lose their charges once they enter an atom.

• It is because the number of subatomic particles in the nucleus is always an even number.

How do you determine the number of neutrons in an atom?

• Add the atomic number and mass number.

• Subtract the atomic number from the mass number.

• The neutron number is the same as the atomic number.

• The neutron number is the same as the amount of electrons.