What kind of bond is the result of the transfer of an electron?
a. an ionic bond
b. a metallic bond
c. a covalent bond
d. a hydrogen bond

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.

Who discovered a pattern to the elements in 1869?