Unit 1-3
What are the 3 subatomic particles that make up an atom and their charges?
Protons
Neutrons
Electrons
What is the molar mass of this compound? (include units)
C3H4O3
88.062g/mol
All elements/compounds on the LEFT side of the arrow are called ___________
Reactants
Will CH4 dissolve in water? (Explain)
No because it has an even distribution of electrons, thus making it nonpolar
Out of the physical states of matter, which is associated with a soluble compound?
Solid, Liquid, Aqueous, Gas
Aqueous
What is Avogadros number?
6.02 X 10^23
What is the formula for this compound?
Pentaphosphorous Decaoxide
P5O10
Name all 5 types of chemical reactions
Types of reactions
1. Single Replacement
2. Double Replacement
3. Synthesis Reaction
4. Decomposition Reaction
5. Combustion Reaction
Which one of these is the empirical formula?
A) C11H22O11
B) C3H5O3
B
Define the difference between theoretical yield and actual yield
Theoretical yield is the amount of product that can be calculated while the actual yield is the amount of product that was actually obtained (usually given in the problem)
What is the difference between electronegativity and ionization energy?
Ionization Energy: Amount of energy required to REMOVE and electron
Electronegativity: The ability of an atom to ATTRACT an electron
What elements/compounds are required in a combustion reaction. (Must include their locations in the chemical equation)
O2 in the reactants with CO2 and H2O in the products
What part of the chemical reaction do we use to convert between compounds?
Hint: (Mole Ratio)
Coefficients
Is the compound below soluble or insoluble?
Ca3(PO4)2
Insoluble
Activity series is used to predict the products for ______________ reactions while the solubility rules are used to predict the product for _____________ reactions.
1) Single Replacement Reactions
2) Double Replacement Reactions
Name ALL 5 molecular shapes (Lewis Dot Structures)
1)
2)
3)
4)
5)
1) Linear
2) Bent
3) Trigonal Planar
4) Trigonal Pyramidal
5) Tetrahedral
What is the name of this compound?
Ti3(PO4)2
Titanium (II) Phosphate
What are the coefficients in this balanced reaction?
___ Al + ___ O2 -----> ___ Al2O3
4 3 2
Is the compound below soluble or insoluble?
NaOH
Soluble
Predict the products for the reactions below.
Al + HCl _________________
H2 + AlCl3
What is the molecular shape of this compound?
BeF2
Linear
How many moles of Aluminum will react with 5.0 moles of Oxygen? (Round to Sig Figs)
4Al + 3O2 -----> 2Al2O3
6.7 mol Al
How many ratios do you need to convert from L of Oxygen to Grams of Lithium Oxide
3 Ratios
- 1 mol/22.4L
- mol/mol (Coefficients)
- 1 mol/molar mass
What is the percent of silicon in this mixture? (Percent mass composition)
Carbon: 5g
Silicon: 4.3g
Lead: 9g
23.5% Silicon
(4 min question)
If we have 12 mol of N2 and 18 mol of H2, What is the excess excess reagent?
N2 + 3 H2 --> 2 NH3
Nitrogen