which type of reaction does this diagram represent?
a) a chain reaction that is caused by nuclear fission
b) a chain reaction that is caused by nuclear fusion
c) a decrease in energy that is caused by nuclear fission
d) an increase in energy that is caused by nuclear fusion

The number at the end of an isotope’s name is the number.

In water, a strong acid will break down into its component parts. a. completely b. partly c. never in water, a weak base will break down into its component parts. a. completely b. partly c. never

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.