Atom - The smallest partical that can exist on it's own, Element - A substance made up of 1 type of atom, Molecule - 2 or more atoms chemically joined, Compound - Contains 2 or more types of atom chemically joined, Periodic table - A list of elements., Nucleus - The centre of an atom that contains protons and neutrons, Mixture - Two or more substances that can be easily separated by physical methods., Substance - A form of matter that has a constant composition and properties that are constant throughout the sample., Elements - Represented by Symbols, Water - Contains two hydrogen atoms and one oxygen atom and is the most abundant compound on earth. , Oxygen - Has an atomic number of 8 and it helps organisms grow, reproduce, and turn food into energy., Compound - Can have covalent bonds, ionic bonds, or metallic bonds in fixed ratio.,

ELEMENTS AND COMPOUNDS CHARACTERISTICS

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