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
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
