YEAR 9 – Chemistry Guaranteed Success
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YEAR 9 – Chemistry Guaranteed Success Elements and Atomic Structure The first 20 elements on the periodic table include hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, argon, potassium, and calcium. Atoms are the building blocks of matter and the world around us. Atomic Components Protons are positively charged particles that make up part of an atom. Electrons are negatively c...