Introduction to Atoms: The Building Blocks of Life

The video tutorial explains that cells are the building blocks of life, composed of atoms, which are the fundamental units of matter. Atoms consist of subatomic particles: protons, neutrons, and electrons. The nucleus, containing protons and neutrons, holds most of an atom's mass, while electrons orbit the nucleus. The video also compares the atomic structures of gold and lead, highlighting differences in their subatomic particles, which result in distinct chemical properties.

What makes the atoms in gold different from those in lead?

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Explain why gold and lead are very different substances.

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