Which particle is responsible for triggering a nuclear reaction?

Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?