How could you break down the compound calcium carbonate into the elements that make it up ? A. by melting
B. by crushing
C. with filter
D. with chemical changes

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate

Anurse used a 0.02-mg/l solution of disinfection to clean a patients wound. what is the concentration of the solution expressed as a percentage?

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays