Use the drop-down menus to complete these statements. Enzymes act as catalysis, coupling reactions with spontaneous reactions. (nonspontaneous or anabolic)
This is important, because without enzymes, processes would not occur. (nonspontaneous or anabolic)
Spontaneous reactions are normally . (exothermic or catabolic)

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

the answers would be

the first one and the second one

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.