Download Academic Chemistry Quarter One

Arnoldi
Chemistry
Final Review
Introductory Unit
1. Density
(Ch 1 and 3)
= Mass
Volume
a. Calculate the density of an object measuring 6.23 cm X 5.00 cm X 3.56 cm and
having a mass of 362.1 grams.
b. The density of an unknown object is 1.32 g/mL. What is the volume, if the mass
of the object is 13.0 g?
2. Remember, when using a measurement device, estimate one place further than the device
measures.
What is the volume of this liquid?
30 mL __
20 mL __
10 mL __
3.
What is being
measured?
Mass
Length
Time
Liquid Volume
Temperature
EXAMPLE:
International
System Unit
Measurement
Device
What is the Kelvin temperature equivalent to 30’C?
4.
Prefix
Abbreviation
Relationship to Base
Unit
Kilo
Deci
Centi
Milli
EXAMPLE: Rank the following from largest to smallest.
10.0 m
5. Percent Error
216.50 cm
=
Actual – Theoretical
Theoretical
0.0445 km
X
0.14 dm
100
The theoretical density of gasoline is 0.70 g/mL. If a student conducted an experiment and
determined the density of gasoline to be 0.65 g/mL, what was her percent error?
Classification of Matter (Ch 2)
1. Definitions
Word Bank:
Compound
Element
Matter
Mixture
Homogeneous Mixture
a. A pure substance composed of two or more elements chemically combined is
called a(n) ___________
b.
A pure substance that cannot be reduced chemically is called a(n)
___________________
c.
A physical combination
___________________
of
two
or
more
substances
is
a(n)
d. A physical combination of two or more substances in which the properties are the
same throughout is a(n)_______________________
e. Anything that has mass and takes up space is _____________________
EXS: Identify each of the following as compounds, elements, solutions (homogeneous
mixture) or heterogeneous mixtures.
a. Air
b. NaCl
c. KCl (aq)
d. Dirt
e. K
2. More Definitions
Word Bank:
Chemical Change
Chemical Property
Physical Change
Physical Property
a. A characteristic that differentiates one substance from another, that can be
observed without changing the substances is a(n) _______________
b. A characteristic that differentiates one substance from another, that cannot be
observed without changing the substances is a(n) _______________
c. A change that results in a new substance with new properties being formed is
a(n) ______________
d. A change that merely changes the appearance, but not the identity of the
substance is a(n) ________
EXS: Label each of the following as a physical property, chemical property, physical
change, or chemical change.
a. Burning Paper
b. Melting Wax
c. Dissolving Salt
d. Color
e. Boiling Point
f. Length
Atomic Theory (Ch 4 and 5)
1. Definitions Word Bank:
Anion
Atomic Mass
Cation
Electrons
Ion
Isotope
a. Any charged particle is called a(n) __________. A positively charged particle is
a(n) ________. A negatively charged particle is a(n) ________
These are all
formed by losing / gaining _________________.
b. An atom that has a set number of protons, but varying numbers of neutrons is
a(n) _____________.
c.
The average mass of all of the isotopes of an element is
_____________________.
called
2. Complete the following table.
Symbol
39
Protons
Electrons
Neutrons
Mass
Number
K
25
56
S-2
54
18
30
82
3. Given the following information, what is the atomic mass of iron?
Percent Abundance
5.82
91.66
2.19
0.33
Isotope
Iron -54
Iron -55
Iron -57
Iron -58
Exact Mass
53.9696 amu
55.9349 amu
56.9354 amu
57.9333 amu
Atomic
Number
4. How are 14C and
13
5. More Definitions
C alike? How are they different?
Word Bank:
Bright-Line Spectrum
Continuous Spectrum
a.
A spectrum in which one color blends into the next is called a(n)
____________________
b.
A spectrum in which
______________________
the
colors
are
distinct
lines
is
called
a(n)
6. Protons are (positively / negatively) charged and found in the (nucleus / shells) of an
atom. Electrons are (positively / negatively) charged and found in the (nucleus / orbitals) of
the atom. Neutrons (are / are not) charged and are found in the (nucleus / orbitals) of the
atom.