What does the temperature of a substance primarily indicate about its molecules?

The chemical bonds between the molecules

The average kinetic energy of the molecules

The total number of molecules in the substance

The size of the individual molecules

What is the direct result of a collision between a fast-moving molecule from a warm substance and a slow-moving molecule from a cool substance?

The slow molecule speeds up, and the fast molecule slows down.

The fast molecule gains even more speed from the collision.

Both molecules are destroyed in the interaction.

The slow molecule transfers its 'coldness' to the fast molecule.

The faster molecules of the warm object transfer kinetic energy to the slower molecules of the cool object through collisions.

The molecules from the cold object physically move into the warm object to absorb energy.

The 'cold' from the cool object flows into the warm object, slowing its molecules down.

Both objects lose energy to the surrounding air, causing them to eventually reach the same temperature.