Matter - anything that has mass and takes up space, Chemistry - is the study of matter and how matter changes, Element - is a substance that cannot be broken down into any other substances by chemical or physical means, Atom - is the basic particle from which all elements are made, Chemical Bond - a force of attraction between two atoms, Molecule - a group of two or more elements held together by chemical bonds, Compound - is a substance made of two or more different elements that are chemically combined, Chemical Formula - shows the elements in a chemical bond and the ratio of atoms, Heterogeneous Mixture - you can easily see the different parts to this mixture, Homogeneous Mixture - evenly mixed to where you cannot see the different parts (all one color), Volume - amount of space that matter occupies, Density - is the measure of the mass of material in a given volume, Physical Change - a change in matter that alters the form or appearance of matter but does not change the substance into a different substance, Chemical Change - a change in matter that produces one or more new substances, Law of Conservation of Mass - states that matter is not created or destroyed only transformed, Thermal Energy - is the total energy of motion of all particles in an object, Chemical Energy - energy stored in the chemical bonds, Solid - has definite shape and definite volume, Liquid - has a definite volume but no shape of its own, Fluid - a substance that flows, Gas - has neither a definite shape nor a definite volume, Melting - change in state from solid to a liquid, Vaporization - change in state from liquid to gas, Condensation - change in state from a gas to a liquid, Sublimation - occurs when the surface particles of a solid gain enough energy that they change into a gas,

Chapter 1&2 Vocabulary

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