Atom (Átomo) - The smallest piece of matter that has the properties of an element; the building blocks of everything, Change (Cambio) - To make something different from what it is now, Chemical Change (Cambio químico) - A change that rearranges the chemical structure of substances through a chemical reaction; can't be changed back to its original state, Chemical Energy (Energía química) - A form of potential energy held in the bonds of atoms and molecules, Chemical Reaction (Reacción química) - A change that rearranges the atom of the original substances into a new substance that has different properties from the original, Compound (Compuesto) - A combination of two or more different kinds of atoms bonded together, Electron (Electrón) - The negative subatomic particle of an atom that orbits the nucleus, Element (Elemento) - A substance made up entirely of one kind of atom, Matter (Importar) - Anything that has mass and takes up space, Neutron (Neutrón) - The neutral subatomic particle of an atom, Nucleus (Núcleo) - The core of the atom that contains protons and neutrons, Molecule (Molecule) - A combination of two or more atoms bonded together, Physical Property (Propiedad física) - A feature of a substance that can be observed or measured without changing the chemical structure of the substance (size, shape, color), Proton (Protón) - The positive subatomic particle of an atom, Pure Substance (Sustancia pura) - A substance in which there is only one type of atom or molecule; does not change, Thermal Energy (Energía térmica) - The motion of atoms and molecules in a substance or object as its temperature increases, Property (Propiedad) - An observable or measurable characteristic of a substance,

Unit 2- Atoms & Molecules

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