What does it mean for an atom if the electron shell is full?

Explain three main characteristics of electrons.

Write a number using scientific notation.

Bonus Question (5 points):  Describe carbon dating

  How many µm are in 3 1/4 inches?  

When measuring small volumes in a graduated cylinder or a serological pipette, the liquid does not lay completely flat across the top, it forms a “smile”.  When this happens, how do you know what the actual volume is?  What is the name of the part of the “smile” that you measure?

Avogadro’s Number is 6.02 X 1023 particles per one ____________ of a substance.

List 3 features regarding metal?

Define valence electrons.

What phase of matter’s volume can be changed by pressure?