"Solubility"
As the water gets warmer, the oxygen bubbles will:
A) get larger and rise to the top
B) Stay exactly the same
C) get smaller and sink to the bottom

List four observations that indicate that a chemical reaction may be taking place

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

Which change to the system wood cause the freely-moving piston to lower?