Chem 103 Module 2 ACTUAL UPDATED Exam Questions and CORRECT Answers

Chem 103 Module 2 ACTUAL UPDATED
Exam Questions and CORRECT Answers
Water in solid state - CORRECT ANSWER -Move fast, stay vlose together but dont touch



When water is heated it clumps - CORRECT ANSWER -Together more



When water is heated above boiling it - CORRECT ANSWER -Moves far apart and
moves very fast


Solid - CORRECT ANSWER -Close together in clump in center



Liquid - CORRECT ANSWER -Fill bottom of container



Gas - CORRECT ANSWER -Move all around container



When water is cooled the molecules - CORRECT ANSWER -Only wiggle and not spin



Gas: - CORRECT ANSWER -Molecules are far apart and move a lot



Neon and argon are - CORRECT ANSWER -More dense in solid form



Water is weird because - CORRECT ANSWER -- it's solid form is less dense than it's
liquid from
- all 3 states are found at naturally occurring temps on earth


Physical change - CORRECT ANSWER -No bonds are broken or formed. The same
substance is there after the change.

, Chemical change - CORRECT ANSWER -The bonds break apart and the atoms rearrange
into new substances with new chemical bonds


K - CORRECT ANSWER -Element symbol



Ag - CORRECT ANSWER -Element symbol


208
PB

82. The 208 is the - CORRECT ANSWER -Mass number



Mass number = - CORRECT ANSWER -Protons + electrons


208
Pb

82. The 82 is - CORRECT ANSWER -Atomic number (z)



The atomic number is - CORRECT ANSWER -# of protons in an atom



The mass of a proton is - CORRECT ANSWER -1 amu



The mass of a neutron is - CORRECT ANSWER -1 amu



The mass of an electron is - CORRECT ANSWER -.0005amu



1.6605x10^-27 is - CORRECT ANSWER -1 anu