Other
Science Alive: Pure Substances, Mixtures, and Separations
One way scientists talk about matter or substance-that is, the stuff in the world-is in terms of pure substances and mixtures. Pure substances are substances that contain only one kind of molecule. Water with nothing else in it is a pure...
Other
Science Alive: Pure Substances, Mixtures, and Separations
This series of activities focuses on the separation of mixtures. The activities can be used in a unit on mixtures and pure substances.