In lesson A-2, he learned that all matter occupies space and has weight. In this lesson, he learned that it also has a particulate nature, which is just a fancy way of saying that it's made of tiny bits or particles.
--We experimented with breaking matter into particles:
• sprayed water and air freshener from a spray bottles (liquid),
• blew through a straw into soapy water & noticed the tiny air bubbles (gas),
• dissolved clay in water & noticed the cloudiness (solid),
• filed a piece of wood (solid).
"The fundamental particles of a given substance are the same. A larger lump of clay, for example, doesn't contain larger clay particles; it only contains more of them." (BFSU, Vol. 1, p.59)
--We read the book Matter by Sally Walker and did an experiment that proved some liquids are more dense than others (which means their molecules are more tightly packed, making them heavier). We started by adding 1/4 cup vegetable oil, then 1/4 cup dish soap, then 1/4 cup water with red food coloring. Then Gerrick decided to add other miscellaneous liquids. Of all he used, maple syrup is definitely the most dense.
--Using these resources, we reviewed what makes the difference between a substance being a solid, liquid, or gas:
• particle attraction in phases of matter,
• microscopic view of states of matter,
• states of matter interactive simulation.
--He made this page for his science notebook:
--We also made and played with our own oobleck (a la Bartholomew and the Oobleck) and watched this video in which it is explained by physicists. Oobleck is a liquid that temporarily changes into a solid when pressure is applied!
(You can see more of our BFSU-inspired science activities here.)