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 ...

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 ...

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 ...

In everyday life, we typically encounter water in one of three familiar states—solid, liquid or gas. But there are in fact ...

1640: Gaspar Berti, through an inventive experiment with a lead ... van Helmont first uses the word "gas" to define a state of matter other than liquids or solids. John Mayow determines that ...