Physical properties can be used to classify and compare substances. The illustration below 47. shows a physical property that is being investigated using different materials. What physical property is most likely being investigated in this illustration? Compounds can be found everywhere and have many different properties. What do all 48. compounds have in common? An element is classified as a What is the reason for this classification? “pure substance”. 49. Dry ice changes from a solid directly into a gas at room temperature. The process of a 50. change of state from a solid to a gas is called sublimation. What does sublimation demonstrate?
47. Physical properties can be used to classify and compare substances. The illustration below shows a physical property that is being investigated using different materials. What physical property is most likely being investigated in this illustration? 48. Compounds can be found everywhere and have many different properties. What do all compounds have in common? 49. An element is classified as a “pure substance”. What is the reason for this classification? 50. Dry ice changes from a solid directly into a gas at room temperature. The process of a change of state from a solid to a gas is called sublimation. What does sublimation demonstrate?