Download 1st Semester Chem Final Exam Study Guide 2012-2013

1st Semester Chemistry Final Exam Study Guide 2012-13
Significant Digits
Be able to identify the correct number of significant digits in a given number.
How many digits are in:
1a. 100 = _________ b. 0.00339= _________
c. 801.010= __________
Be able to calculate using significant digits
2a. 62.1 x 0.022 = __________ b. 4.559 + 12= ___________
c. 735 – 435 = ____________
Quantum numbers
Know 4 Quantum numbers; what each stands for and their correct order.
3a. Quantum number ________
Stands for: _____________________________________
b. Quantum number ________
Stands for: _____________________________________
c. Quantum number ________
Stands for: _____________________________________
d. Quantum number ________
Stands for: _____________________________________
Metric Conversions
Know what each metric prefix stands for; their correct order and be able to convert them.
4a. Prefix ________
Stands for: _____________________________________
b. Prefix ________
Stands for: _____________________________________
c. Prefix ________
Stands for: _____________________________________
d. Prefix ________
Stands for: _____________________________________
e. Prefix ________
Stands for: _____________________________________
f. Prefix ________
Stands for: _____________________________________
g. Prefix ________
Stands for: _____________________________________
h. Prefix ________
Stands for: _____________________________________
The Periodic Table
Know the versions of the periodic table and the scientist who created them:
5a. Scientist name _________________________________
Table design ___________________________________________________________________
______________________________________________________________________________
b. Scientist name _________________________________
Table design ___________________________________________________________________
______________________________________________________________________________
c. Scientist name _________________________________
Table design ___________________________________________________________________
______________________________________________________________________________
d. Scientist name _________________________________
Table design ___________________________________________________________________
______________________________________________________________________________
Know what an oxidation number is, how it is used and where to find it on the periodic table.
Know that the periodic table is organized by periods and groups. Know what a period is and what a group is.
6a. Period is: __________________________________________________
b. Group is: __________________________________________________
7a. Elements in the same period have the same _________________________________.
b. Elements in the same group have similar ___________________________________.
Be able to identify an element’s period and group.
8a. The period and group for Magnesium is ____________________.
b. The electron configuration of a certain element ends in 4p4. The period and group for this element
is: _______________________________
Be able to identify any element as a metal, nonmetal, noble gas or metalloid.
9a. Calcium is a ____________ b. Chlorine is a ______________ c. Silicon is a _______________
Know that the metals have 3 or less electrons in the outer level and nonmetals have 5 or more.
Know that an element’s physical and chemical properties are the result of its atomic number.
Know what ions and isotopes are.
10 a. An ion is a ___________________________________________________________.
b. An isotope is a: ______________________________________________________.
Electrons
Know how many electron pairs total number of electrons each of the sublevels can hold.
11a. Sublevel __________ # of electron pairs____________ total number of electrons ________
b. Sublevel __________ # of electron pairs____________ total number of electrons ________
c. Sublevel __________ # of electron pairs____________ total number of electrons ________
d. Sublevel __________ # of electron pairs____________ total number of electrons ________
Be able to write the longhand and shorthand electron configurations for any element.
12a. Aluminum: Longhand _______________________________________________
Shorthand _______________________________________________
b. Iron:
Longhand _______________________________________________
Shorthand _______________________________________________
c. Galium:
Longhand _______________________________________________
Shorthand _______________________________________________
Be able to draw the Lewis Dot Diagram for any element.
13a. Aluminum
b. Iron
c. Gallium
Be able to use the Pyramid of Stability to determine any element’s stability.
14a. Chromium
_____________________
b. Copper ______________________
c. Zinc
_____________________
d. Yttrium ______________________
Chemical Formulas and Equations
Be able to write the correct formula for any given compound.
15a. Sodium Sulfate
Formula: _________________________________
b. Lead (IV) Phosphide
Formula: _________________________________
c. Ammonium Nitride
Formula: _________________________________
Be able to determine how many atoms of each element are in a given compound.
16a. Na(C2H3O2) # of atoms _____________________
b. Be3N2
# of atoms _____________________
c. Pb3(PO4)4
# of atoms _____________________
Be able to identify the products and reactants in a chemical equation: Co(NO3)2 + Zn  Zn(NO3)2 + Co
17a The reactants are: ________________________
b. The products are: ________________________
Be able to balance a chemical equation.
18a. ______ C2H4 + ______ O2  ______ CO2 + ______ H2O
b. ______ Al + ______ Fe3N2  ______ AlN + ______ Fe
c. ______ Ca(CO3) + ______ H3(PO4)  ______ Ca3(PO4)2 + ______ H2(CO3)
Be able to identify each of the 4 reaction types and predict their products and balance the equation..
19.a. Rxn _____
______ Ag2S 
b. Rxn ______
______ ZnS + ______ AlP 
c. Rxn ______
______ C3H8 + ______ O2 
20. Predict the products, balance the equation and identify the reaction for the following reactions:
a. Silver(I) Nitrate + Zinc Chloride
b. Magnesium Bromide + Chlorine
c. Methane (CH4) + Oxygen
Mole conversions
Be able to calculate moles to grams, grams to moles.
21a. How many moles are in 11.1g of NaCl?
b. How many grams are in 8.62 moles of K(SO3)?
c. How many grams are in 3.39 moles of Vanadium Oxide?
% Composition
Be able to determine the % composition of the elements in any given compound.
22a. What is the percent composition of each of the elements in Sn(CO3)2?
b. What is the percent composition of each of the elements in Iron (III) Iodide?
Empirical Formula
Be able to determine an element’s empirical formula form its molecular formula.
23a. Molecular formula: C2H4O2
Empirical formula ________________
b. Molecular formula: SnO
Empirical formula ________________
Be able to calculate an element’s empirical formula using the information given.
24a. Determine the empirical formula of a compound containing 38.7% C, 16.1% H, and 45.2% N.
b. What is the empirical formula of a compound if a 50.0 g sample contains 9.1g Na, 20.6g Cr and 22.2 g O?
Be able to calculate an element’s molecular formula using the information given:
25a. A compound contains 18.8% sodium, 29.0% chlorine, and 52.2% oxygen, by mass. If the molecular mass of the
compound is 122.44 g/mol, determine the molecular formulas.
b. A 4.99 gram sample of a compound contains 1.52 grams of nitrogen atoms and 3.47 grams of oxygen
atoms. The molecular mass is 92.04 g. What is the compound’s molecular formula?