PHYSICS - Matter - Atom Structure

This video tutorial covers the basics of atomic structure, including the concepts of atomic number and mass number. It explains how atoms can become ions by gaining or losing electrons, affecting their charge. The video also introduces isotopes, which are forms of elements with the same number of protons but different numbers of neutrons, leading to different mass numbers. The tutorial uses the periodic table to illustrate these concepts and emphasizes the importance of understanding these ideas in both chemistry and physics.

What does the atomic number of an element represent?

• The total number of protons and neutrons

• The number of protons in the nucleus

• The number of electrons in a neutral atom

• The mass of the atom

How does an atom become a positive ion?

• By losing protons

• By gaining neutrons

• By gaining protons

• By losing electrons

What remains unchanged when an atom becomes an ion?

• The number of electrons

• The atomic mass

• The overall charge

• The number of protons

Which of the following is true about isotopes?

• They have different atomic numbers

• They have different numbers of neutrons

• They have the same number of neutrons

• They have different numbers of protons

What is the difference between protium, deuterium, and tritium?

• They have different atomic numbers

• They have different numbers of neutrons

• They have different numbers of electrons

• They have different numbers of protons