Atomic Structure and Radiation Concepts

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 between shells and how atoms become ions.

What is the charge of a neutron?

• Variable

• Neutral

• Negative

• Positive

How many times smaller are electrons compared to protons or neutrons?

• 2000 times

• 100 times

• 500 times

• 1000 times

What does the atomic number of an element represent?

• Number of neutrons

• Number of isotopes

• Number of electrons

• Number of protons

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

• 12

• 7

• 4

• 3

What defines isotopes of the same element?

• Same number of electrons

• Same number of protons

• Same number of neutrons

• Same mass number

What is the process called when unstable isotopes emit radiation?

• Nuclear fusion

• Radioactive decay

• Electron excitation

• Ionization

What happens when an electron becomes 'excited'?

• It moves to a higher energy level

• It moves to a lower energy level

• It becomes a proton

• It loses energy

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

• Chemical reaction

• Thermal energy

• Electromagnetic radiation

• Nuclear force

What is formed when an atom loses an electron?

• A negative ion

• A positive ion

• A neutral atom

• A neutron

What does ionizing radiation do to atoms?

• Changes atomic number

• Knocks off electrons

• Removes neutrons

• Adds protons