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Atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three particles: protons, neutrons and electrons. Protons and neutrons are heavier than electrons and reside in the center of the atom, which is called the nucleus. Electrons are extremely lightweight and exist in a cloud orbiting the […]
ELEMENTS Element Definition: A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess. These are the first 20 elements, listed in order: 1 – H – Hydrogen 2 – He – Helium 3 – Li – Lithium 4 – Be – […]
Element Definition: A chemical element is a substance that cannot be broken down by chemical means. Elements are defined by the number of protons they possess. These are the first 20 elements, listed in order: 1 – H – Hydrogen 2 – He – Helium 3 – Li – Lithium 4 – Be – Beryllium […]
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