*Question*: Which statement best explains how periods on the periodic table are organized?
*Answer*: increasing atomic number from left to right

*Question*: Ms. Bristol measured the mass of a closed beaker containing several ice cubes. The mass was 100 g. An hour later, after the ice cubes had melted, Ms. Bristol measured the mass of the beaker again. What was the mass of the beaker of water the second time?
*Answer*: 100 g

*Question*: If 1 kg of the compound toluene melts at -95C, then 500 g of toluene will
*Answer*:
melt at -95C.