Not ! chemistry b semester final 1. particles in a gas are best described as (1 point) • slow-moving, kinetic, hard spheres • small, hard spheres with insignificant volumes 2. how does the atmospheric pressure at altitudes below sea level compare with atmospheric pressure at sea level? (1 point) • the atmospheric pressure below sea level is higher.

b i think it’s a water wheel turning in a stream

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