If a substance is reduced, it must undergo a: a. gain of electrons.
b. gain of hydrogen.
c. loss of oxygen.
d. gain of oxygen.
e. loss of electrons.

In the millikan oil drop experiment they determined that every drop had a charge which was a while number multiple of -1.60x10^-19. if a drop has a total charge of -9.60x10^-19 then how many excess electrons are contained within the drop?

Suppose you have designed a new thermometer called the x thermometer. on the x scale the boiling point of water is 129 ? x and the freezing point of water is 13 ? x. part a at what temperature are the readings on the fahrenheit and x thermometers the same?

Why is the melting of ice a physical change ?