TEST 1

CHM 1045

REVIEW TOPICS

1. Significant Figures

2. Rounding Off

3. Scientific Notation

4. Operations with powers of ten (addition, subtraction,
multiplication, division, raising to an exponent)

5. Conversions and meaning of units:

a. Metric to Metric
conversions

b. English to
Metric conversions

c. Fractional or
complex conversions

d. Square and
Cubic conversions

e. Density and
Specific gravity-density must be used as a conversion factor!

f. Temperature Conversions

6. Heat and Specific Heat Capacity

7. Classification of Matter:

a. Pure Substances: Elements vs.
Compounds

b. Mixtures: Homogeneous vs.
Heterogeneous

8. Physical and Chemical changes/properties

9. Names and symbols of elements.in IA-VIIIA, Period 4, and

10. Subatomic Particles: protons, electrons, neutrons,
atomic number and mass number.

11. Isotopes:

a. Determining numbers or protons,
neutrons and electrons based on the isotope symbol.

b. Working with the formula for
weighed average atomic weight of an element and weights of individual isotopes
and percent abundance.

c. Know how to
determine number of protons, neutrons and electrons given the isotope symbol
for an ion.

12. Allotropes

13. The mole and conversions using moles, grams, atoms,
molecules

14. Conversions between grams/moles/particles of a compound
and of an element in the compound using the ration of elements from the
formula.

12. Percent Composition-calculating and using %.

13. Empirical Formulas from grams and from %.

14. Molecular formulas from empirical formula and molar
mass.

15. Empirical Formulas from combustion analysis data.

a. Determining % of an
element by reaction to give weight of a compound that contains the element.
e.g. %Cl if given amount of AgCl obtained after
reaction

with AgNO3.

b. Determining empirical
formula when given weight of CO_{2} obtained from a given amount of a
hydrocarbon (CxHy).

16. % purity calculations and using % purity as a conversion
factor.

17. Determining % purity of a hydrate from data obtained
from heating the hydrate.

18. Know charges of ions formed from metals with fixed
charge and nonmetals (nonmetals always have fixed charges) and know which
metals have variable charges.

19. Be able to criss-cross
and simplify formulas to come up with ionic formulas.

20. Know how to name binary covalent and ionic compounds and
ternary ionic compounds with some simple polyatomic ions such as sulfate, sulfite,
nitrate, carbonate, acetate, phosphate and hydroxide.

21. Know the names of changes in physical state and the
names of the temperatures at which the changes occur. Also how you can go from
one to another (change temperature or pressure and in which direction).