Section 3.2—Properties of Matter What properties are useful or not useful in an airbag?

Physical versus Chemical Properties Physical Property Chemical Property Can be observed or tested without changing the atoms or molecules In the process of observing or testing, the atoms or molecules are changed into different substance(s)

Intensive and Extensive Properties Intensive Property Extensive Property Size of the sample doesn’t matter—you’d say a big piece and a small piece were the same with respect to this property Size of the sample does matter—a big piece and a small piece would be different with respect to this property

Are the following properties are physical or chemical? Let’s Practice Flammability Boiling point Solubility Malleability Reactivity with oxygen Example: Are the following properties are physical or chemical?

Are the following properties are physical or chemical? Let’s Practice Flammability Boiling point Solubility Malleability Reactivity with oxygen Chemical Physical Example: Are the following properties are physical or chemical?

Are the following properties are intensive or extensive? Let’s Practice Mass Volume Color Flammability Texture Example: Are the following properties are intensive or extensive?

Are the following properties are intensive or extensive? Let’s Practice Mass Volume Color Flammability Texture Extensive Intensive Example: Are the following properties are intensive or extensive?