The non-metals in this family are the most reactive. -alkali
-alkaline earth
-halogen
-noble gas
Which one?

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons,neutrons,electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)

Exit what is the density of an object having a mass of 5.0 g and a volume of 45.0 cm3?

Concentrations expressed as a percent by mass are useful when the solute is a a. liquid b. gas c. solid