All of the following are examples of EXTENSIVE properties of matter EXCEPT volume, number of atoms, length, and the state of matter.
The Correct Answer and Explanation is:
The correct answer is number of atoms.
Explanation:
Extensive properties are physical properties that depend on the amount of substance present in a sample. In other words, these properties change when the size or quantity of the sample is altered. The examples of extensive properties in the list are volume, length, and state of matter. Here’s why:
- Volume is an extensive property because it is directly proportional to the amount of substance. The larger the sample, the greater the volume.
- Length is also an extensive property because the length of an object depends on the amount of material it consists of. If you have more material, the length can be increased accordingly.
- State of matter (solid, liquid, gas) is considered an extensive property because the state of matter in a system may vary depending on the amount of the substance. For instance, a larger quantity of a substance might exhibit different physical characteristics based on its state.
However, number of atoms is not an extensive property. It is an example of an intensive property because it does not change with the size or quantity of the sample. The number of atoms is fixed for a given amount of matter, and it remains constant regardless of the sample’s size. It is related to the composition of the substance rather than the size of the sample. Even if you break a large object into smaller pieces, the total number of atoms remains unchanged.
In conclusion, while volume, length, and state of matter depend on the quantity of matter present, the number of atoms remains the same, making it an intensive property.
