Atom — smallest element unit?
Contains protons, neutrons, electrons.
Periodic Table — organized by?
Increasing proton number.
Outer Electron States — role?
Determine an atom’s reactivity.
Proton Number — also?
Atomic number, defines element.
Electron Configuration — pattern?
Repeats periodically across elements.
Nuclear Fusion — process?
Light nuclei combine, releasing energy.
Nuclear Fission — process?
Heavy nucleus splits, releasing energy.
Radioactive Decay — mechanism?
Unstable nucleus transforms spontaneously.
Nuclear Energy — origin?
From changes in nuclear binding energy.
Conservation of Nucleons — principle?
Protons + neutrons stay constant.
Star Lifecycle — stages?
Formation, main sequence, death.
Sun’s lifespan — years?
About 10 billion years.
Element formation in stars — process?
Fusion creates lighter elements.
Supernova — creates?
Heavier elements beyond iron.
Star energy — source?
Nuclear fusion in core.
Water’s thermal capacity — property?
Absorbs/releases large energy amounts.
Water expands — when?
When it freezes into ice.
Water — solvent?
Dissolves many substances.
Water’s effect — on Earth?
Shapes surface, influences climate.
Energy resources — consideration?
Cost, safety, environment, sustainability.
Testez vos connaissances avec un QCM de 10 questions sur Fundamentals of Atomic and Nuclear Science.
1. What is the primary cause that leads to the formation of new elements within stars and influences their lifecycle?
2. According to the source, what does nuclear fusion involve?
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