Matching Pairs Physical and Chemical VocabOnline version Vocabulary practice Physical and Chemical by Tabitha Najera 1 a pure substance composed of only 1 type of atom 2 properties that identify changes such as color, hardness, or shape 3 a combination of chemical symbols showing the atoms of which a substance is made and their proportions 4 properties of a substance that changes form or creates a new substance 5 made of 2 or more elements that are chemically combined and is not separated by physical means into other substances 6 anything that has mass and takes up space 7 the smallest particle of an element 8 A single kind of matter that has a specific set of properties 9 a product, result or outcome of a process or chemical change 10 a number written below and to the right that shows how many atoms of an element are present substance Matter precipitate physical property compound chemical property element atom chemical formula subscript