Which isotope will spontaneously decay and emit particles with a charge of + 2?

(1) 53Fe (3) 198Au

(2) 137Cs (4) 220Fr

Which phrase describes air density? increases as altitude increases equals mass divided by volume pushes molecules in one direction exerts less pressure as it increases

How many electrons, protons, and neutrons does Li have?

What conclusions can you draw about the relationship between chemical structure and dye color?

Each sheet of metal on a roof is parallel to the rest of the sheets of metal. If the first sheet of metal is perpendicular to the top line of the roof, what can you conclude about the rest of sheets of metal? Justify your answer. a.

There are 43.2 g of carbon to 14.4 g of hydrogen in a sample of methane (CH4). What percent of 37.8 g of methane is carbon?

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda

What substances decrease the h + ion concentration in a solution?

How much greater is the energy produced by a fusion reaction compared to a chemical reaction?

True or false. A bond between a metal atom and a nonmetal atom is likely an iconic bond

What is a precipitate? It is a liquid that forms from solution during a chemical reaction. It is a reactant that forms from solution during a chemical reaction. It is a solid that forms from solution during a chemical reaction.