Atomic Structure and Particle Properties

This video provides a comprehensive review of atomic structure, including the nucleus, protons, neutrons, and electrons. It explains the periodic table, focusing on atomic and mass numbers, and introduces isotopes and their stability. The video also covers electron energy levels, excitation, and ionization, detailing how electrons move and how atoms become ions.

What is the charge of a neutron?

• Neutral

• Negative

• Variable

• Positive

How many times smaller is an electron compared to a proton?

• 100 times

• 1000 times

• 2000 times

• 500 times

What does the atomic number of an element represent?

• Number of isotopes

• Number of neutrons

• Number of protons

• Number of electrons

If an atom has 3 protons and 4 neutrons, what is its mass number?

• 7

• 12

• 4

• 3

What defines isotopes of the same element?

• Same number of neutrons

• Same atomic mass

• Same mass number

• Same number of protons

What is the process called when unstable isotopes emit radiation?

• Radioactive decay

• Nuclear fusion

• Electron excitation

• Ionization

What happens when an electron becomes 'excited'?

• It loses energy

• It becomes a proton

• It moves to a lower energy level

• It moves to a higher energy level

What is required for an electron to jump to a higher energy level?

• Heat energy

• Electromagnetic radiation

• Gravitational pull

• Nuclear force

What is formed when an atom loses an electron?

• A positive ion

• A neutron

• A neutral atom

• A negative ion

What does ionizing radiation do to atoms?

• Adds protons

• Removes neutrons

• Knocks off electrons

• Changes atomic number