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 and how atoms become ions.

What is the charge of a neutron?

• Positive

• Negative

• Variable

• Neutral

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

• 2000 times

• 1000 times

• 500 times

• 100 times

What does the atomic number of an element represent?

• Number of electrons

• Number of energy levels

• Number of protons

• Number of neutrons

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

• 3

• 4

• 7

• 12

What defines isotopes of the same element?

• Same number of protons and neutrons

• Same number of electrons, different protons

• Same number of neutrons, different protons

• Same number of protons, different neutrons

What is the process called when unstable isotopes emit radiation?

• Ionization

• Radioactive decay

• Excitation

• Fusion

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?

• Chemical reaction

• Electromagnetic radiation

• Nuclear energy

• Thermal energy

What is formed when an atom loses an electron?

• A negative ion

• A positive ion

• A neutron

• A neutral atom

What does ionizing radiation do to atoms?

• Changes atomic number

• Adds protons

• Removes neutrons

• Knocks off electrons