Atom - are the smallest unit of an element that maintains the properties of that element., Electron - a particle found in an atom and has a negative charge., Neutron - subatomic particles found inside the nucleus of every atom, they do NOT have an electric charge., Nucleus (of an Atom) - -is the small, dense central region of an atom that contains positively charged protons and neutral neutrons., Proton - a subatomic particle with a positive electrical charge, found inside the nucleus of an atom., Element - is made up of one or more of the same kind of atom chemically combined., Compound - is made up of different kinds of atoms chemically combined, but has different properties from the elements that make them up., Ion - an atom that has lost or gained one or more electrons., Ionization - a process in which atoms lose or gain electrons to become electrically charged particles., Molecule - two or more atoms connected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance., Particle - is a small localized object that can be described by several physical or chemical properties, such as volume, density, or mass., Isotope - one of two or more types of atoms of an element that have the same atomic number and position in the periodic table, but have different atomic masses and physical properties., Law of Conservation of Mass - the law states that in ordinary chemical and physical changes, mass is not created or destroyed but is only transformed into different substances., Atomic Number - the number of protons present in the nucleus of an atom, which uniquely identifies a chemical element and determines its position on the periodic table., Product - a substance that is present at the end of a chemical reaction., Reactant - raw materials that react with one another and form products,

Atom Vocabulary

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