Match the term (Endothermic) with the correct definition energy goes into the chemical and cool downs the surrounding area.

energy leaves the chemical and cools down the surrounding area

energy leaves the chemical and heats up the surrounding area

Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!