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Chapters4-5 Chapters 7-8
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1.Explain why chemistry
affects all aspects of life and
most neutral events?
Because living and no living
things are made of matter,
chemistry affects all aspects of
life and most natural events.
2.Name the five traditional
areas into which chemistry can
be divided?
Five traditional areas of study
are organic chemistry
inorganic chemistry
biochemistry analytical
chemistry and physical
chemistry.
3.Describe the relationship
between pure chemistry and
applied chemistry?
pure research can lead directly
to an application but an
application can exist research
is done to explain how it
works.
4.what are two general steps in
successful problem solving?
The two steps to solve a
successful problem is to
analyze and calculate.
5. Name to categories used to
classify properties of matter?
Properties used to describe
matter can be classified as
extensive or intensive
6. Name three states of matter?
Three states of matter are solid
liquid and gas.
7.How are mixtures classified?
Based on the distribution of
their components mixtures an
be classified as heterogeneous
mixtures or as homogeneous.
8. How did Democritus
characterize atoms?
Democritus believed atoms
were invisible and
indestructible.
9. What are three types of
subatomic particles?
Three kinds of subatomic
particles are electrons protons
and neutrons.
10. What was the basic new
proposal in the Bohr model of
the atom?
Bohr proposed that an electron
is found only specific circular
paths or orbits around the
nucleus.
11. How are wavelength and
frequency of light related?
Wavelength and frequency are
related by its proportional to
each other.
12.Describe the cause of
atomic emission spectrum of
an element?
When atoms absorb energy
electrons move in to higher
levels. These electrons then
loose energy emitting light
when return to lower energy
levels.
13.what information can be
included in a periodic table?
The periodic table displays the
symbols and names of the
elements along with
information about the structure
of their atoms.
How can you determine the
number of valence electrons in
an atom of a represtative
element?
To find the number of valence
electrons in an atom of
representative element simply
look at its group number.
15. How can you describe the
electrical charge of ionic
compound?
Although they are compose of
ions ionic compounds are
electrically neutral.
What information does a
molecular formula provide?
A molecular formula shows
how many atoms of each
element a molecule contains.
17. What electron
configurations do atoms
usually achieve by sharing
electrons form covalent bond?
In covalent bonds electron
sharing usually occurs so that
atoms attain the electron
configurations of noble gases.
18. How are atomic and
molecular orbitals releated?
Just an atomic orbitals belongs
to a particular atom a
molecular orbital belongs to a
molecule as a whole.
19.what is a vsepr theory?
A vsepr theory is a repluson between electron pairs and adjust electron pairs.
What happens when
polar molecules are
between oppositely
charged metal plates?
When polar molecules
are placed between
oppositely charged
plates they tend to
become oriented with
respect to the positive
and negative plates.
Explain how the
charges of group A
metal and nonmetal
ions are related to their
positions in the periodic
table?
When the metals in
groups 1a 2a and 3a
lose electronics they
form cations with
positive charges equal
to their group number.
What are the usual
endings for the names
of polyatomic ions?
The names of most
polyatomic anions end
in ite, ate.
Describe how to
determine the names of
binary ionic
compounds?
To name any binary ionic compound place the cation name first followed by the anion name.
What two laws describe how chemical compounds form?
The law of definite proportions and the law of multiple proportions.
Describe how to convert between the mass and the number of
moles of a substance?
Use the molar mass of an element or compound to convert
between the mass of a substance and the moles of a substance.