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Properties of Matter: Investigation 3 –










Instruct students to complete the Analysis Questions in their SDRs then discuss them as a class. Use the suggested responses below to guide students’ answers.

Note: Questions marked with a triangle (∆) are included to enrich your understanding. These questions do not appear in your SDR. 

  • Were all compounds soluble or miscible in water? 
  • Ask students to compare the formulas of the solid compounds that were soluble in water. Were the compounds composed of the same elements? 
  • Compare the formulas of the liquid compounds that were miscible in water. Were they composed of the same elements? 
  •  Were there any compounds that were composed of the same elements but had different solubilities or miscibilities in water? 
  •  Why can compounds composed of identical elements have different solubilities? 
  • What conclusions about the properties of compounds and elemental composition can you draw from your investigation? 

Note: Remember, in Investigation 1, you studied other metals in addition to the two you explored in this Investigation.

  • ∆ Based on the data that was collected, what would you expect to happen if the metals from Investigation 1 were added to an acid? 


Complete the Focus Questions in your SDR then discuss them as a class. 

  • Do compounds composed of the same elements have identical properties? Explain your answer. 
  • Can compounds composed of different elements have similar properties?