Molar Mass
The molar mass of SH2
34 g
Physical or chemical change?
Change in color
Chemical
What (g) indicates in a chemical equation
Gas
The value you cannot change when balancing a chemical equation
The subscript
The room where you can find Mr. Jacques for help during lunch
Room 211
How to convert from mass to # of particles
2. Multiply by Avogadro's number
Physical or chemical property
Color
Physical
The number that indicates the amount of a molecule
The coefficient
K + Br2 → KBr
2 K + Br2 → 2 KBr
The document that contains all necessary information on how to handle a chemical safely
The SDS (safety data sheet)
The molar mass of 6.02*1023 particles of H2O
18 g
-New substance produced
Write this reaction:
2 moles/molecules of gaseous hydrogen and gaseous oxygen/oxygen gas reaction to form liquid water
2H2 (g) + O2 (g) -> 2 H2O (l)
H2 + NO → H2O + N2
2 H2 + 2 NO → 2 H2O + N2
The value which indicates the ability of a trend line to predict a value
The R2 value
The number of moles of H2O in a 45 g sample
The type of change that occurs during sublimation
Physical
The reactants and products and/or reaction direction
Al2O3 + C → Al + CO2
2 Al2O3 + 3 C → 4 Al + 3 CO2
The upcoming Sturgis play
Radium Girls (November 14th-16th)
The molar mass of scandium (VI/6) nitride
73 g
An example of physical and chemical change from our most recent lab
Answers will vary
The word form of this reaction:
Zn (s) + 2HCl (aq) -> ZnCl2 (s) + H2 (g)
Solid zinc and 2 moles/molecules of aqueous hydrochloric acid combine to form solid zinc (II) chloride and hydrogen gas
CaCl2 + AgNO3 → AgCl + Ca(NO3)2
CaCl2 + 2 AgNO3 → 2 AgCl + Ca(NO3)2
The names of our maintenance staff