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. The process of radioactive decay and ionizing radiation is briefly discussed.

What is the charge of a neutron in an atom?

• Positive

• Negative

• Neutral

• Variable

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

• 500 times

• 100 times

• 2000 times

• 1000 times

What does the atomic number of an element represent?

• Number of protons

• Number of neutrons

• Number of electrons

• Number of isotopes

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 mass number

• Same number of neutrons

• Same number of protons

• Same number of electrons

What is the process called when unstable isotopes emit radiation?

• Electron excitation

• Radioactive decay

• Nuclear fusion

• Ionization

What happens when an electron becomes excited?

• It becomes a proton

• It loses energy

• It moves to a lower energy level

• It moves to a higher energy level

What type of radiation can cause an electron to become excited?

• Alpha radiation

• Beta radiation

• Electromagnetic radiation

• Gamma radiation

What is formed when an atom loses an electron?

• A neutron

• A negative ion

• A positive ion

• A neutral atom

What does ionizing radiation do to atoms?

• Knocks off electrons

• Removes neutrons

• Adds protons

• Changes the element