Answer: The two properties that determine which substance has the higher temperature are: The average speed of the particles in each substance. The kinetic energy of the fastest particle in each substance
Explanation: Temperature is a measure of the average kinetic energy of the particles in a substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance.
The mass of each substance and the mass of one particle in each substance do not directly affect the temperature of a substance.
Here is an example:
Imagine two different substances, A and B, that are both pure, meaning they each contain only one type of matter. Each substance has a different temperature, with substance A having a higher temperature than substance B.
This means that the average kinetic energy of the particles in substance A is higher than the average kinetic energy of the particles in substance B. It also means that some of the particles in substance A have a higher kinetic energy than some of the particles in substance B.
However, the mass of each substance and the mass of one particle in each substance are the same. This means that the mass of a particle does not affect the kinetic energy of the particle or the temperature of the substance.
Therefore, the two properties that determine which substance has the higher temperature are the average speed of the particles in each substance and the kinetic energy of the fastest particle in each substance.
I hope this helps.