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's role in identifying elements and discusses isotopes and their stability. The video also covers electron energy levels, excitation, and ionization, highlighting how electrons can move between shells and the effects of ionizing radiation.

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

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

• 100 times

• 2000 times

• 500 times

• 1000 times

What does the atomic number of an element represent?

• Number of neutrons

• Number of electrons

• Number of protons

• Number of isotopes

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

• 12

• 3

• 4

• 7

What defines isotopes of the same element?

• Same number of neutrons, different protons

• Same number of neutrons, different electrons

• Same number of protons, different neutrons

• Same number of electrons, different protons

What is the process called when unstable isotopes emit radiation?

• Ionization

• Radioactive decay

• Fusion

• Excitation

What happens when an electron becomes 'excited'?

• It moves to a higher energy level

• It leaves the atom

• It moves to a lower energy level

• It changes into a proton

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

• Nuclear energy

• Electromagnetic radiation

• Heat energy

• Kinetic energy

What is formed when an atom loses an electron?

• A neutral atom

• A neutron

• A positive ion

• A negative ion

What does ionizing radiation do to atoms?

• Changes atomic number

• Knocks off electrons

• Removes neutrons

• Adds protons