12 Questions
Which sub-atomic particle has the smallest mass compared to the others?
Electron
Why will a proton be deflected towards the negative plate in an electric field?
Because it is positively charged
What is the main reason electrons do not move in fixed orbits around the nucleus?
Because of their small mass and wave-like nature
In an electric field, which sub-atomic particle will not be deflected?
Neutron
Why does the electron experience a greater angle of deflection than the proton in an electric field?
Because electrons are lighter than protons
What conclusion can be drawn from the behavior of sub-atomic particles in an electric field?
Protons are positively-charged, electrons are negatively-charged, neutrons are neutral
What is the difference between proton number and nucleon number?
Proton number is the total number of protons in an atom, while nucleon number is the total number of protons and neutrons in an atom.
What is the relationship between the number of protons and electrons in a neutral atom?
The number of protons and electrons is always the same.
What is the difference between a cation and an anion?
A cation is a positively charged ion formed when an atom loses electrons, while an anion is a negatively charged ion formed when an atom gains electrons.
What is the main difference between isotopes of the same element?
They have different numbers of neutrons.
What is the purpose of using the carbon-12 scale for relative atomic mass?
It is the most abundant isotope of carbon, making it a convenient standard.
How is the relative atomic mass of an element calculated?
It is the weighted average of the relative masses of all the element's isotopes.
Test your knowledge on atomic structure, orbitals, protons, neutrons, electrons, and the behavior of sub-atomic particles in an electric field. Learn about the composition of the nucleus and the charges of protons and electrons.
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