Chemistry - It is the science that studies and applies the structure, properties, combinations, interactions, and reactions of matter, Element - name given to pure substances that are composed of atoms of the same kind and cannot be separated into simpler and different substances by chemical means., Atom - the smallest particle of a chemical element that can exist., Acid - the name given to chemical substances with a pH of less than 7, with varying degrees of caustic - corrosive properties and a wide range of uses., protons - positive electrical charge, neutrons - no electrical charge, electrons - negative electrical charge, lot of hydrogen ions - acids, lot of hydroxide ions - bases, three part of atom - proton - neutron - electron.,

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