Question

mass and volume are both extensive properties; they change with the amount of substance, such as cola in the container. density, however, is an intensive property and is independent of the amount of a substance. melting points, boiling points, and conductivity are other intensive properties. two liters of water boil at the same temperature and have the same density as one liter of water does.
analyze classify each statement as an extensive or an intensive property.
extensive intensive
a pot of boiling water has more energy than a cup of boiling water.
a pot of water boils at the same temperature as a cup of water.
copper wire conducts electricity.
a block of ice takes longer to melt than does a small ice cube.
mixtures and pure substances
matter can be either a pure substance or a mixture. a pure substance has a fixed

Explanation:

• A block of ice takes longer to melt than does a small ice cube: This is related to the concept of heat transfer. A larger block of ice has a greater mass (an extensive property) compared to a small ice cube. The amount of heat required to melt a substance is related to its mass (more mass means more heat needed). Since mass is an extensive property (depends on the amount of substance), this statement is about an extensive property.
• Copper wire conducts electricity: Conductivity is a property that does not depend on the amount of copper wire. Whether it is a long or short copper wire (as long as it is copper), it will conduct electricity. So, conductivity is an intensive property.
• A pot of water boils at the same temperature as a cup of water: Temperature is an intensive property. It does not depend on the amount of water (whether it is a pot or a cup).
• A pot of boiling water has more energy than a cup of boiling water: The amount of energy (in the form of heat content here) depends on the amount of water. A pot has more water (greater mass - an extensive property), so it has more energy. Energy content (in this context of heat) is related to the amount of substance, so it is an extensive property.

Answer:

1. Extensive
2. Intensive
3. Intensive
4. Extensive