Strand Benchmark

Nevada Science HSPE Benchmarks/Item Specifications Edited 10/13/05 Strand/ Nevada Science HSPE Benchmarks Benchmark Description/Specification C1 Physical Science Students know different molecular arrangements and motions account for the P.12.A.1 different physical properties of solids, liquids, and gases. E/S Distinguish between solids, liquids, and gases in models and diagrams of molecular arrangement and/or motion. Describe the motion of particles in solids, liquids, and gases and use kinetic-molecular theory to explain properties of the states of matter. Students know elements in the periodic table are arranged into groups and P.12.A.2 periods by repeating patterns and relationships. E/S Explain why elements in the main groups (metals, nonmetals, alkali metals, alkaline earths, halogens, and noble [inert] gases) on the periodic table have similar properties. Know the positions of metals and non-metals on the periodic table. Describe the differences between metals and non-metals. Describe periodic trends in atomic mass in atomic number. Distinguish between the atomic number and the atomic mass of an element. Given the atomic number and atomic mass for a given isotope of any element in the periodic table, determine the number of electrons, protons, and neutrons. (See also P.12.A.8.) P.12.A.3 Students know identifiable properties can be used to separate mixtures. E/S Distinguish between mixtures and compounds. guish bn heterogeneous ...