Investigate with your students what happens when heat is removed from a range of liquids with this 60-minute lesson.
Understanding Heat and Matter
Heat is a form of energy that affects the behavior of matter. When heat is added to an object, the particles within it move faster because they gain energy. This can cause matter to change states—for example, ice (a solid) melts into water (a liquid) when heated, and water can turn into steam (a gas) if heated further. On the other hand, when heat is removed, particles slow down, which can cause matter to freeze or condense. By exploring how heat influences the particles in matter, students can better understand processes like melting, boiling, and freezing that happen in everyday life.
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