State symbols are used in symbol equations to show whether each chemical is a solid, liquid, gas or solution. But it’s often hard to know exactly what’s going on. We can use word equations to ...

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.

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 ...