Chem. Notes Flashcards
What make up the bubbles in boiling water?
Steam/Water Vapor
What is 0ºc in F?
32ºF
What is the equation for converting F in C?
(TF-32ºF) 1ºc/1.8ºF=TC
What is the equation for converting C to F?
TC•1.8ºF/1ºc+32ºF= TF
At what temperature are Fahrenheit in Celsius the same?
-40
Δ100ºc=Δ___ºF
Δ180ºF
Element:
A fundamental material consisting of one type of atom.
Physical Proporties:
Proporties that dont change the chem. makeup of something
Chemical Proporties:
Proporties that affect the chem. makeup of something.
A Compound is:
when atoms different elements come together to make a substance/molecule A material where different elements are bonded together
What do atoms make up?
Basically Everything
An element is determined by the number of _____.
Protons
What is a Chemical Formula?
A notion used to indicate the composition of a compound. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound ex: Al2(SO4)3 (aluminum sulfate)
What is an Elemental Formula?
A notion that uses the atomic symbol (and sometimes a numerical subscript) to denote how atoms are bonded in an element
Mixture:
A combination of more than one substance in which the substance retain it’s proporties.
An element is determined by the number of _____.
Protons
What is a Chemical Formula?
A notion used to indicate the composition of a compound. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound
What is an Elemental Formula?
A notion that uses the atomic symbol (and sometimes a numerical subscript) to denote how atoms are bonded in an element
How is the periodic table of elements organized?
Most of an atom is made up of____.
Vacume
Elements in the periodic table are organized by their _____.
Non-Metals are ____ conductors of electricity.
Metals are ______ conductors of electricity.
Great
Metalloids are ______ conductors of electricity.
Very Weak
True or False
A H atom takes up less space than a He atom.
False!
Since the He has 2 protons instea of 1, it is able to pull its two electrons closer to its neucleous. The H atom has less of a pull on its one electron.
What is the equation of the ideal gas law?
PV=nRT
-
P=pressure (in atm) V=Volume (in L)
n=Number of moles
T=Tempreture (in K)
R=Gas constant (0.08206 atm*L/mol*K)
How does suction work?
What is in the air?
~80% N2
~20% O2
CO2
CO
Carbon (soot)
~1% Ar
and some other stuff
At what temp. does water boil?
100oc or 212oF
Ionic vs. dipol-diopl
Ionic would win
