CHEM 1320 EXAM 1
Combination of 2 or more substances remains
variable composition; distinct identities
Cant be expressed by formula
At least 2 types of atoms
Exclusive b/c retain unique properties; mixing
Can be physically bro
Chem 1320 Final Study Guide
o Homogeneous=Uniform composition throughout.
o Heterogeneous=Opposite of homogenous
o Mixtures= can be separated by physical processes.
o Extensive=Dependent on amount of matter.
o Intensive=Independent of am
Conversions to know
Numbers in green are EXACT numbers!
1.000 lb = 453.6 g
60 sec = 1 min
1 in = 2.54 cm
60 min = 1 hr
1.000 mi = 1.609 km
1 lb = 16 oz
1.00 qt = 0.946 L
12 in = 1 ft
SI prefixes (Table 1.3)
3 ft = 1 yd
Celsius Fahrenheit - Kelvin
1 mi = 5
MULTIPLE CHOICE (3 pts each): For each question circle the BEST answer.
1. The formula of iron(II) phosphate is
Fe2 PO 4
Fe3 PO 4
( 4 )2
The reaction of molybdenum(V) chloride with sodium sulfide is give
hemistry 1320 Final Exam
If we know the atomic mass of an
element we also know its=
Molar mass in grams
Atomic mass in amus
1 mole of an element contains how many atoms?
-6.022x10^23 atoms (avogadros #)
1 amu= 1.661x10^-24g
Chem. Exam 3
General Properties of Aqueous Solutions
Solution: homogeneous mixture of 2 or more substances
Solvent: substance present in the largest molar amount
Solutes: Other substances present
A substance that dissolves in a particular s
Kinetics: how fast a reaction takes place.
o Chemical Kinetics examines the rate and mechanism of
chemical reactions and the factors that influence them
Concerned with the reactants rather than the product
Chemistry 1320 Ch. 1
Uncertainty in Measurement
o Numbers with defined value
o Numbers determined by counting
o Experimentally determined; comes from measurement
Significant Figures: the meani
Chem. Exam 2
Different molecules, same formula
Molecules with an odd number of Electrons
Usually 4 bonds, no lone pairs
Sometimes 3 bonds, no lone pairs
o Positive charge
o Very reactive
December 12, 2013
Prof. J. E. Adams
NAME: _ Student No.: _
FINAL EXAM: 200 points
This is your final chance to show how much you learned this semester (a lot, I hope
September 17, 2014
Drs. J. E. Adams and J. W. Perry
EXAM #1: 100 points (though 110 points are possible)
Below you will find some values of fundamental constants and some equations, some of wh
Please answer these questions DIRECTLY into your lab notebook.
1.) Why can't you use pen to mark the chromatography paper in this experiment?
2.) Why is it important to stop the chromatograph before the solvent reaches the top of the
paper? What would hap
Please write all prelab answers directly into your lab notebook
1) A 50.0 gram sample of water is heated from 21.5 oC to 26.21 oC. How many Joules of heat were
added to this solution?
2) A 15.25 gram sample of copper initially at 92 degrees is added to a
PRE-LAB QUESTIONS for the KClO3 Lab
Complete these questions before lab.
1. Find the MSDS for potassium chlorate.
a) Are there any health hazards associated with this material, and what conditions produce these
b) Under what conditions does it pr
Chem 1320 Chapter 12 Study Guide
12.1: The Condensed Phases
Intermolecular refers to forces between molecules, atoms, or ions.
The magnitude of intermolecular forces determines if a substance is solid,
liquid, or gas.
Gas: rapidly moving parti
Rules for Assigning Oxidation
1. Elements (one kind of atom, no charge): oxidation number is ZERO
2. Monatomic ions: oxidation number = the charge on the ion
3. Oxygen: usually -2 EXCEPT in H2O2 and O2-2 it is -1 and O2- it is -1/2