What Is An Atom - Part 1

The video explains the structure and properties of atoms, the building blocks of matter. It covers the concept of elements and compounds, the periodic table's development by Dmitri Mendeleev, and the stability of atoms. The video also delves into atomic structure, detailing protons, neutrons, and electrons, and discusses isotopes, ions, and radioactivity.

What is the primary difference between elements and compounds?

• Elements are larger than compounds.

• Elements are made of one type of atom, while compounds are made of different types of atoms bonded together.

• Elements can be broken down into simpler substances, while compounds cannot.

• Compounds are found only in nature, while elements are man-made.

Who is credited with the creation of the periodic table?

• Dmitri Mendeleev

• Albert Einstein

• Isaac Newton

• Marie Curie

Which subatomic particle is found orbiting the nucleus of an atom?

• Proton

• Neutron

• Electron

• Photon

What happens to an atom when it gains or loses electrons?

• It becomes an ion.

• It becomes a new element.

• It becomes radioactive.

• It becomes an isotope.

What is the main characteristic that distinguishes isotopes of the same element?

• Different number of electrons

• Different number of neutrons

• Different number of protons

• Different chemical properties