But what's an atom made of? What is matter, really? Matter is defined as that which 1) has mass and 2) has volume or takes up space. Mass is an intrinsic property whose base SI unit is the ...

Part of science is learning how to ask questions and make observations about our world. Everything around us is made from matter. Matter is anything that has mass and takes up space. Learning how to ...

Matter is made up of small particles called ... Particles in gases - AQA Gases take up more space than solids or liquids and their particles are moving much faster. The temperature, pressure ...