Trivia
This element was originally discovered in Urine
What is Phosphorus
A 5.871g of Ni has ______ atoms
(5.871g Ni)(1mol/58.693g)(6.01x1023atoms/mol)
Ion is an ______ with a _____ due to gain/loss of _________
element or compound , charge, electrons
These elements were some of the last to be discovered because they have full valence shell and don't react with other elements.
Noble gasses.
The name of a molecule made up of 2 atoms with an element with 7 protons and three atoms of an element in group 16, period 2
dinitrogen trioxide (N2O3)
This experiment showed that atoms are made of mostly empty space, with a small, dense center.
Gold Foil experiment
The mass of Sc+3 in g/mol
44.946g/mol
This is what we call when a solvent dissolves a solute
Mixture
Elements is a group/peroid display similar chemical properties
group
******* Daily Double*****
Give the chemical formula when Zn+2 combines with Iodine.
What is its name?
ZnI2
Zinc Iodide
This experiment showed the existence of small negatively charged particles.
Cathode ray experiment
Zn has two isotopes, one with an atomic mass of 63.9292 and one with an atomic mass of 71.9278. The AVERAGE atomic mass of zinc is 65.38.
What are the % abundance for these two isotopes.
81.9% and 18.1%
This "law" can be exemplified by CO and CO2
Law of multiple proportions
An element's group/period defines what valence shell is being filled.
period
(NH4)2S
Ammonium Sulfide
What is the name of the Ferrier who came?
Rhys
Which of the following particles has a mass that is closest to the mass of elemental oxygen. (hint O2)
H2O, OH-, O2-,S
S
This is defined as 'having more than one atom'
molecule
Si belongs to this 'sub-group' of transition metals
metalloids
Carbon Disulfide
CS2
This man never received a Nobel Prize but, though had the most nominations. He's also responsible for describing a type of acid/base, and students are taught his 'dot' structure for valence electrons
Mr. Lewis, G.N. Lewis, Gilbert N Lewis
How many atoms are in 22.99lbs of sodium?
2.2Lbs/1000g
(22.99lbs Na)(1000g/2.2lbs)(1mol/22.99g)(6.02x1023atoms/mol)
This is defined as 'having more than one kind of molecule'
compound
If a new alkaline earth metal were discovered its atomic number would probably be...
120
I have 36 electrons when I form a +2 cation
Strontium