Are elements in the periodic table grouped by their properties?

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Nonmetal halogen family atmoic mass 35

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?