atom, n. - a small particle of chemical matter, bond, n. - a connection that holds atoms together, chemical, n. - a specific type of matter made of particles of the same type, chemical change, n. - the result when two or more types of matter interact to form a new type of matter, chemistry, n. - the science of what matter is made of and how matter changes, condense, v. - to change state from gas to liquid, conserve, v. - to maintain a constant quantity, data, n. - recordable details or measurements, design process n. - a plan that is used to find and develop solutions to a problem, dissolve, v. - to separate and spread out particles of matter into another substance, element, n. - a substance made of a single type of atom, evaporate, v. - to change form from liquid to gas , evidence, n. - information that helps answer a question, support a claim, or solve a problem, expand, v. - to grow bigger, gas, n. - matter with indefinite volume and shape, in which the particles move around freely and expand to fill any container, solid, n. - matter with definite shape and volume, in which the particles are rigidly arranged in place, solution, n. - a way to solve a problem, states of matter, n. - the different physical forms of matter, substance, n. - a type of matter that is the same throughout, liquid, n. - matter with definite volume but indefinite shape, in which the particles move around each other freely but do not expand to fill any container, matter, n. - anything that has mass and takes up space, mixture, n. - a combination of different types of matter that can usually be separated back into its original parts, models, n. - pictures, symbols, or physical examples that help explain something that we cannot directly observe, molecule, n. - a substance made of one or more kinds of atoms joined together by chemical bonds, particles, n. - tiny pieces of matter that are too small to be seen, physical change, n. - a change that occurs when matter changes form (shape, size) but no new type of matter is formed, precipitate, n. - a solid formed from a chemical change, property, n. - a quality, trait, or detail used to describe something,

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