Periodic Table
What number does Hexa- represent.
6
How many electrons does Br, bromine, have?
35
What is the law of conservation of mass.
Matter can not be created nor destroyed
What are the 7 Diatomic elements
H,N,O,F,Cl,Br,I
How does Atomic Radius changes as you go across a period?
What is decreases?
How to covey the charge of a transition metal when writing out the name of the compound?
Roman numerals.
What are the 5 chemical reactions types?
Synthesis, Decomposition , Single-replacement, Double-replacement, Combustion.
What is the differences between ionic and covalent compounds
Ionic compounds do not share electrons
Compounds share elements
What does Coulombs law describe?
The strength of the force between two charges.
What is the formula for Dinitrogen tetroxide
N2O4
How many lone pairs are on Nitrogen in the compound NH3
1 set of lone pairs
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
Decomposition
H2O is an example of what
What is a compound
As you go down the periotic table electron affinity changes, why?
What is the trend decrease because atoms electron shells increase proving more shielding for the electron.
What is the name of and charge of SO3
Sulfite, -2
What type of bonds does NH3 have?
Single bonds
What type of reaction is illustrated below?
Zn + H2S --> ZnS + H2
Single replacement
What is the difference of electroactivity needed for a ionic bond.
1.7 or higher
What is the chemical formula for Iron(III) chloride
FeCl3
Finish the electron configuration for Germanium (Ge)
1s2 2s2 2p6 3s2 3p6 4s2 3d10 ???
What is 4p2.
Balance the equation
CH4 + O2 --> CO2 + H2O
CH4 + 2O2 --> CO2 + 2H2O
Is Ca(NO3) a neutral compound? If not explain why.
No, Ca has a positive 2 and NO3 is negative 1 making the compound shown have a +1 charge