Elements, Compounds, Mixtures Draw the graphic organizer in your notebook. Cut out the boxes and sort them, then answer the questions. Glue the final product in your notebook. Compound Element Mixture Consists of only one kind of atom Homogeneous substances that are evenly mixed Can exist as either atoms or molecules Made of elements in a specific ratio that is always the same Can be separated physically (filtration, chromatography, evaporation, distillation) Molecules of elements & compounds that are together without chemical bonds Water - 2 Hydrogen atoms and 1 Oxygen atom bonded together A pure substance that cannot be separated into simpler substance by physical or chemical means. Made from atoms of different elements joined by chemical bonds Substances held together by physical forces, not chemical Can be separated into elements chemically, but not physically Heterogeneous substances that are not evenly mixed Helium He Compound Water H20 Carbon Dioxide CO2 Oxygen O2 Air Salt NaCl After completing the activity, answer these questions. 1. Define molecule and give an example. 2. Describe how a compound is different from the elements that make it up. ANSWER KEY Matter Elements Compounds Helium He Mixtures Air Salt NaCl Oxygen Can be separated physically (filtration, chromatography, evaporation, distillation) A pure substance that cannot be separated into simpler substance by physical or chemical means. Water H20 Molecules of elements & compounds that are together without chemical bonds Consists of only one kind of atom Carbon Dioxide CO2 Substances held together by physical forces, not chemical Can exist as either atoms or molecules Made from atoms of different elements joined by chemical bonds Water - 2 Hydrogen atoms and 1 Oxygen atom bonded together Homogeneous substances that are evenly mixed Made of elements in a specific ratio that is always the same Can be separated into elements chemically, but not physically Heterogeneous substances that are not evenly mixed Answers 1. Define molecule and give an example. When two or more atoms of the same element are chemically bonded together, H2 2. Describe how a compound is different from the elements that make it up. The chemical and physical properties of a compound are different than the elements it is made from Copyright © 2020 Sandy’s Science Stuff
