Science Chapter 1 Lesson 1.2 Classifying Matter

February 13, 2018 Off By admin
Term Definition
element a substance that cannot be broken down into any other substances by chemical or physical means.
atom the basic particle from which all elements are made; the smallest particle of an element that has the properties of that element.
chemical bond the force of attraction that holds two atoms together.
molecule a neutral group of two or more atoms held together by covalent bonds.
mixture two or more substances that are together in the same place but their atoms are not chemically combined.
chemical formula symbols that show the elements in a compound and the ratio of atoms.
compound a substance made of two or more elements chemically combined in a specific ratio, or proportion.
heterogeneous mixtures mixtures you can see usually see the different parts and they can easily be separated out. (ex…guacamale, salad)
homogeneous mixtures substances are so evenly mixed that you can't see the different parts. (ex…soy sauce, honey, )
filtration solids can be separated from liquids by pouring the mixture through filter.
distillation liquids can be separated from each other by heating them up to the temperature at which one of the liquids boils. Then gas cools, forming the separated liquid.
magnetic attraction iron objects can be separated from a mixture using a magnet.
evaporation when left in the open air, liquid solutions can change to gas, leaving solid components behind.