Are your students ready to build a clear decision rule using scientific properties? These 30 TASK CARDS - Grade 8 provide structured practice in using physical and chemical properties to create logical, evidence-based identification rules. Aligned to PS.3.A — Building a Property-Based Decision Rule, this resource helps students apply measurable properties such as density, melting point, boiling point, solubility, conductivity, viscosity, pH level, magnetism, thermal conductivity, specific heat,