Aweather front occurs when two air masses of differing temperatures meet. when a cold air mass meets a warm air mass, for example, what will happen to the warm air? a. it will reverse directions. b. it will sink. c. it will rise. d. nothing will happen.

the correct answer is, it will rise, i just answered that question on studyisland.

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

i don't know people like to fight everywhere rip.