Unit 3: Messin' More With Matter - Physical Changes

Unit Information:
Unit 3 Goals & Resources
Unit 3 Vocabulary Help (Quizlet Set)

Shape shifting into multiple forms, growing in size in the cold, dissolving many things on the planet just by touching it, and defying the pull of gravity.

It has been the source of transportation for centuries, and wars have started over it; yet, you can find it in your house and it even makes up most of you.

The substance is known by some as H₂O, but most people just call it---water.

Water is pretty amazing stuff!  Did you know it's one of the only substances that is less dense in its solid state than it is in its liquid state?   This video explains this in depth:

Our next unit is about the changes that happen to matter when thermal energy is added or taken away.  Often we will use water as an example because it is the only substance on Earth that naturally occurs in a solid, liquid, and gas state.

Who would have thought that something so ordinary was so unique!?!