Atoms become stable when? A

Subject:BiologyPrice: Bought3

Share With

Atoms become stable when? A. they have a negative charge. B. their outermost electron shell is filled to capacity C. they have a positive charge. D. they have equal numbers of protons and electrons. Covalent bonds are bonds in which: A. two atoms' nuclei fuse. B. one atom donates an electron to another atom. C. two atoms share electrons. D. the weak negative charge from one atom associates with the weak positive charge from another atom. Water molecules are cohesive, meaning that they stick together. Why does this happen? A. covalent bonds form between the oxygens and hydrogens of different water molecules B. hydrogen bonds form between the hydrogens of different water molecules C. ionic bonds form between the oxygens and hydrogens of different water molecules D. hydrogen bonds form between the oxygens and hydrogens of different water molecules What are the unique properties of water that make it so critical to life? A cohesion, large heat capacity, high density as a solid, and good solvent B. cohesion, small heat capacity, low density as a solid, and good solvent cohesion, large heat capacity, low density as a solid, and good solvent D. fusion, large heat capacity, low density as a solid, and good solvent A lake in rural Maine drops in pH from 7 to 5 as a result of acid rain falling into it. How has the He ion concentration changed as a result of the acid rain? A. The H+ ion concentration has doubled its starting concentration. B. The H+ jon concentration hasn't changed, but the OH-ion concentration has doubled. C. The H+ ion concentration has increased 100 times its starting concentration. D. The Htion concentration has decreased by 20 times its starting concentration A substance is determined to be an acid if it: dissolves most solids placed in it. B! tastes bitter and feels slippery c. increases the hydrogen jon concentration of a solution increases the concentration of OH-in the solution