Question

What's the relationship between the temperature and the density of a substance?

A. As the temperature increases, the density decreases.
B. As the temperature decreases, the density decreases.
C. Temperature doesn't affect the density of a substance.
D. Temperature decreases the density of a substance only at high altitudes.

Answer 1

Answer: I´m pretty sure that it´s A or D

Explanation: Temperature Effects on Density. Density is a physical property of substances that compares the relationship between volume and mass. Density is affected by temperature because as temperature increases so does the kinetic energy of the particles.

I hope that this helps but if not sorry.

Answer 2

The correct answer is option A, As the temperature increases, the density decreases

Step-by-step explanation:

As the temperature of a substance is raised, the atoms and molecules within the substance gets heated. The heated subatomic particles starts vibrating at their position and induces vibration in the near by atoms/molecules too. Thus all the subatomic particle on heating gain kinetic energy and starts moving away from each other and thus the interatomic and intermolecular space between them increases. Now there are less number of atom/molecule in a given interatomic/molecular space. Therefore the density decreases.