Science assignmnet

Directions: After you have read the lab chapter twice, answer the following questions:



1)Describe the term hypothesis.


2)What subatomic particles contribute to the atomic mass of an atom?


3)True or False. Your data will either prove or disprove your hypothesis.


4)Using the following information from the periodic table of elements for Nitrogen, determine the number valence electrons this atom contains when electrically neutral: Atomic number: 7; Atomic mass 14




5) Describe a polar covalent bond