Students are introduced to the idea that matter is composed of atoms and molecules that are attracted to each other and in constant motion. Students explore the attractions and motion of atoms and ...

Solids, liquids and gases. In a solid like this brick ... The control variable is kept the same during the experiment. As the control variable, in both samples, use the same number of spoonfuls ...

Everything that has mass is matter. In normal everyday life we come across matter in three states, solid, liquid and gas. They have a fixed shape and cannot flow The particles cannot move from ...

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 ...

Among the key challenges to sustaining long-term life beyond Earth are achieving self-sufficiency and reducing reliance on Earth resource supply Uti ...