Describe something that is not matter. what characteristics is it lacking?

Answer;

Energy such as heat light, are examples of non matter

Explanation;Matter is anything that occupies space and has weight and mass. It is also tangible, and visible.Not everything is matter, others such as heat and light are not matter, they are non-matter, This is because they are not tangible, they lack weight, they also lack atoms or molecules, but they are form of energy.Therefore, energy such as heat, and light  are non matters

It is a product

We first assume that this gas is an ideal gas where it follows the ideal gas equation. the said equation is expressed as: pv = nrt. from this equation, we can predict the changes in the pressure, volume and temperature. if the volume and the temperature of this gas is doubled, then the pressure still stays the same.