Anyhow, we finally had a 2 Liter bottle in the house (thank you Aunt Jane), so we could do two short little experiments I've had my eye on for a while, plus a bonus to qualify for the giveaway.
Next up was Matter Takes Up Space from Janice VanCleave's website. We put a balloon over the mouth of the bottle and attempted to blow up the balloon.
That was as much as any of us could do. The air inside the bottle kept the balloon from expanding any more than that. I think this one went over Noah's head, though they both thought it was neat.
Last up was Oil + Water = Lava Lamp. We poured vegetable oil and water tinted with food coloring into the bottle and noticed how they stayed separate.
I thought the blue dye would make the separation more obvious, but it just confused them. It mixed with the vegetable oil enough to turn it green, and Noah just focused on that.