The Building Blocks of Matter Atoms Protons Electrons and Neutrons Explained

The video explains that atoms are composed of protons, electrons, and neutrons. Protons determine the atomic number and identity of an element, as seen in the periodic table. Electrons, which have a negative charge, form an electron cloud around the nucleus due to electric force. Neutrons, along with protons, are held together by the strong nuclear force, ensuring atomic stability.

What are the three fundamental particles that make up an atom?

• Protons, electrons, and neutrons

• Protons, neutrons, and photons

• Protons, electrons, and positrons

• Electrons, neutrons, and quarks

How many protons does the element helium have?

• Three

• Two

• One

• Four

What determines the atomic number of an element?

• The number of protons

• The number of atoms

• The number of neutrons

• The number of electrons

Which element has 118 protons in its nucleus?

• Oganesson

• Lithium

• Helium

• Hydrogen

What is the role of electrons in an atom?

• They hold the nucleus together

• They determine the atomic number

• They orbit the nucleus and create an electron cloud

• They form the nucleus

What is the electric force in an atom?

• The force that holds neutrons together

• The attraction between protons and electrons

• The repulsion between electrons

• The force that binds protons in the nucleus

Why do atoms need neutrons?

• To increase the atomic number

• To prevent protons from repelling each other

• To form the electron cloud

• To balance the charge of electrons

What is the strong nuclear force?

• The force that attracts electrons to protons

• The force that repels protons

• The force that holds the nucleus together

• The force that binds electrons in the cloud

What would happen if there were no neutrons in an atom?

• The atom would become unstable

• The electrons would stop orbiting

• The protons would repel each other

• The atom would become helium