Question

select all of the correct descriptions of temperature
measure of the average
kinetic energy of a substance
measure of how hot or cold
something is
measure of the number of
particles in a substance
measure of the phase of a
substance

Explanation:

Step1: Recall the definition of temperature

Temperature is a measure related to the kinetic energy of particles in a substance. The average kinetic energy of the particles in a substance is directly related to its temperature. Also, temperature gives an indication of how hot or cold something is.

Step2: Analyze each option

• "Measure of the average kinetic energy of a substance": This is correct as per the kinetic - molecular theory of matter.
• "Measure of how hot or cold something is": This is a common - sense and also a correct operational definition of temperature.
• "Measure of the number of particles in a substance": The number of particles in a substance is related to the amount of substance (e.g., measured in moles), not temperature.
• "Measure of the phase of a substance": The phase of a substance (solid, liquid, gas) is related to temperature and pressure, but temperature itself is not a measure of the phase.

Answer:

"Measure of the average kinetic energy of a substance" and "Measure of how hot or cold something is"