Question

What do scientists call anything that takes up space and has mass?

Answer 1

Matter

Explanation:

Matter is anything that occupies space space(volume) and has mass.
Matter exist in several states:

• Solid
  
  https://sites.google.com/site/solidliquidgasmatter/solids

• Liquid
  
  http://www.wisegeek.com/what-is-a-liquid-diet.htm

• Gas
  
  https://en.wikipedia.org/wiki/Gas

• Plasma