What effect does temperature have on reaction rate? A. An increase in temperature speeds up the reaction rate.
B. An increase in temperature slows the reaction down.
C. An increase in temperature does not change the reaction rate.
D. An increase in temperature keeps the reaction from stopping.

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.