The particle model is the name for the diagrams used to draw solids, liquids and gases. In the model ... variable is kept the same during the experiment. As the control variable, in both samples ...

Although the three states of matter are solid, liquid, and gas, not all substances seem to fit perfectly into one of these groups. Take a look at the substance below and see if you can decide whether ...

Researchers from the University of Shanghai for Science and Technology and the University of Illinois Urbana-Champaign have ...

Students explore the attractions and motion of atoms and molecules as they experiment with and observe the heating and cooling of a solid, liquid, and gas.