Final answer:
In the provided list, density, boiling point, and melting point are physical properties as they can be observed without changing the substance's composition. Flammability, rusting, combustion, and oxidation are chemical properties because they result in new matter.
Step-by-step explanation:
The physical properties from the list provided are: density, boiling point, and melting point. These properties can be observed or measured without causing a change in the substance’s composition. Physical properties include aspects like color, density, hardness, as well as melting and boiling points.
Chemical properties, on the other hand, describe a substance's ability to undergo a certain chemical change. Flammability, rusting, combustion, and oxidation are examples of chemical properties because they involve the production of new kinds of matter from the original substances. For example, rust forms when iron reacts with oxygen and water, representing a chemical change.
To address the student's question directly:
- Density - Physical Property
- Boiling Point - Physical Property
- Melting Point - Physical Property
- Rusting - Chemical Property
- Combustion - Chemical Property
- Oxidation - Chemical Property
- Combustibility - Chemical Property