Atoms and Molecules
The charge and mass of the following:
proton =
neutron =
electron =
proton = +1 , 1 amu
neutron = 0 , 1 amu
electrons = -1, 0 amu
How many atoms are in 2 moles of Cupper?
12.044x1023 atoms of Cu
___ Al + ___ O2 → ____ Al2O3
_4__ Al+ _3__ O2 → _2__ Al2O3
What is the chemical formula of Lithium Oxide?
Li2O
The four states of matter, from lowest to highest kinetic energy, are:
Solid, Liquid, Gas, Plasma
What is the molar mass of SO2?
64.063 g/mol
How many moles are in 24.305 grams of Mg?
1 mole of Mg
C2H5OH (aq)+ O2 (g)-->
Predict and balance the equation.
Reaction type:
C2H5OH (aq) + 3O2(g) --> 2CO2 (g) + 3H2O (l)
Rxn type= combustion
What is the name of C3H9?
Tricarbon Nonahydride
Draw a molecular interpretation of a mixture:
OO OII OO OI
OOI III IIO O
IIO O OOI III
The Protons, Neutrons and Electrons of 58Ni+2 are:
P=28 N=30 E=26
How many moles of oxygen are there in 36 grams of Aluminum Oxide?
0.353 moles of oxygen
Molar mass of Al2O3 is 101.964 g/mol
___ Al(OH)3 + ____ HCl →
Balance and predict.
Rxn Type?
_1__ Al(OH)3 + _3__ HCl → _1__ AlCl3 + _3__ H2O
Rxn type: double-displacement/ acid base
What is the chemical formula of Ammonium perchlorate?
NH4ClO4
Two chemicals have been mixed together. 3 signs that there might be a chemical reaction are:
Formation of heat, light, sound, solid, gas, or a color change
The noble gas notation electron configuration of Ruthenium is:
[Kr] 5s2 4d6
How many atoms of hydrogen and oxygen are there in one molecule of ammonium phosphate?
12 atoms of H in one molecule of (NH4)3PO4
4 atoms of O in one molecule of (NH4)3PO4
Decomposition of Ba(OH)2 --> ??
Ba(OH)2 (aq)--> BaO (s)+ H2O (l)
What is the chemical formula of Rhodium (IV) Carbonate?
Rh(CO3)2
A substance boiling on the stove has gas forming. This is a ___________ change.
Physical or Phase
An isotope contains 11 protons, 10 electrons, and 12 neutrons.
What is the identity of the isotope?
23Na+
Decomposition of Ba(OH)2 --> x + y
If I start with 5 g of Ba(OH)2 and how many grams of x and y , you can get?
Ba(OH)2 (aq)--> BaO (s)+ H2O (l)
Solve for 5 g of Ba(OH)2
Decomposition reaction of Na2CO3 is:
Na2CO3(s) → 2 Na2O(s) + CO2(g)
What is the chemical name of Fe(SO4)2?
Iron (IV) Sulfate
Name three compounds that are insulators as a solid but a conductor when it is in aqueous solution?
NaCl
K2O
CaBr2
...