Question

when water is placed in a freezer at 0°c it becomes ice. when an iron bicycle is left outdoors and is exposed to moist air, it gets rusty. when a glass marble is heated and then quickly cooled, it shatters. extensive and intensive properties scientists describe properties of matter as extensive and intensive. an extensive property is one that depends directly on the amount of a substance present. an intensive property is one that does not depend on the amount of the substance present. all quantities of a substance have the same values of the intensive property. if you immerse a 12 - ounce can of regular cola and an equal - sized can of diet cola in a tub of water, you will notice that the regular cola sinks and the diet cola floats, although both cans contain the same volume. the sweetener in diet cola is hundreds of times sweeter per unit volume than the sugar in regular cola. so, a much smaller mass of sweetener is needed in the diet cola to produce the amount of sweetness sugar produces in regular cola. explain what are the extensive and intensive properties described in this experiment? which properties would change and which would stay the same if you ran the experiment using 7.5 - ounce cans instead of 12 - ounce cans? lesson 2 identifying physical and chemical propert

Explanation:

• Extensive property: Mass (since mass depends on the amount of substance, e.g., a 12 - ounce can has more mass than a 7.5 - ounce can of the same liquid).
• Intensive property: Density (density of regular cola is higher than that of diet cola, and it does not depend on the volume of the can. The sweetener in diet cola is more concentrated per unit volume, so the density difference (intensive property) causes the sinking and floating behavior).
• If using 7.5 - ounce cans instead of 12 - ounce cans:
• Change: Mass (because the amount of substance is less).
• Stay the same: Density (since density is an intensive property and does not depend on the quantity of the substance. The relationship between the mass and volume (which defines density) for regular and diet cola remains the same per unit volume).

Answer:

• Extensive property: Mass.
• Intensive property: Density.
• If using 7.5 - ounce cans: Mass changes; Density stays the same.