Atomic Structure and Subatomic Particles

The video tutorial covers subatomic particles, focusing on electrons, protons, and neutrons. It explains their locations, charges, and masses, and how these particles define elements through atomic numbers. The video also discusses atomic mass units and the stability of the nucleus, highlighting the role of nuclear force in overcoming electromagnetic repulsion. The tutorial concludes with a summary of the key points about subatomic particles and their significance in atomic structure.

Where are electrons located in an atom?

• In the center of the atom

• Inside the nucleus

• In orbitals outside the nucleus

• Between protons and neutrons

What is the charge of an electron?

• Positive

• Neutral

• Variable

• Negative

What determines the identity of an element?

• Atomic mass

• Number of electrons

• Number of protons

• Number of neutrons

What is the atomic number of sulfur?

• 16

• 8

• 6

• 17

What is the charge of a neutron?

• Neutral

• Variable

• Negative

• Positive

How does the mass of a neutron compare to that of a proton?

• Almost the same

• Much larger

• Much smaller

• Slightly larger

In atomic mass units, what is the relative mass of a proton?

• 2000

• 0

• 1

• 2

What is the role of neutrons in the nucleus?

• To stabilize the nucleus

• To increase atomic mass

• To repel protons

• To determine atomic number

What is the charge of the nucleus?

• Variable

• Positive

• Neutral

• Negative

What force helps stabilize the nucleus despite proton repulsion?

• Gravitational force

• Electromagnetic force

• Coulomb's force

• Nuclear force