The Nature of Matter
 What you need to know: Benchmark Checklist
 How to identify various ways in which substances differ (e.g., mass, volume, shape, density, texture, and reaction to temperature and light).  SC.A.1.3.1 AA 
 Understand the difference between weight and mass. SC.A.1.3.2  
 Temperature measures the average energy of motion of the particles that make up the substance. SC.A.1.3.3  
 Atoms in solids are close together and do not move around easily; in liquids, atoms tend to move farther apart; in gas, atoms are quite far apart and move around freely. SC.A.1.3.4 
 The difference between a physical change in a substance (i.e., altering the shape, form, volume, or density) and a chemical change (i.e., producing new substances with different characteristics). SC.A.1.3.5 
 Know that equal volumes of different substances may have different masses.  SC.A.1.3.6  
 Describes and compares the properties of particles and waves.  SC.A.2.3.1  
 The student knows the general properties of the atom (a massive nucleus of neutral neutrons and positive protons surrounded by a cloud of negative electrons) and accepts that single atoms are not visible. SC.A.2.3.2  
 Radiation, light, and heat are forms of energy used to cook food, treat diseases, and provide energy.  SC.A.2.3.3 
Bold = Questions are asked on this topic EVERY year.