AMU CHEM 134 STUDY GUIDE
WITH CORRECT QUESTIONS
AND ANSWERS
usr
[COMPANY NAME] [Company address]
,1. Explain how you could experimentally determine whether the
outside tem- perature is higher or lower than 0 °C (32 °F) without using
a thermometer? :Answer Place a glass of water outside. It will freeze if the temperature is
below 0 °C.
2. Identify each of the following statements as being most similar
to a hypoth- esis, a law, or a theory. Explain your reasoning.
(a)The pressure of a sample of gas is directly proportional to the
temperature of the gas.
(b)Matter consists of tiny particles that can combine in specific
ratios to form substances with specific properties.
(c) At a higher temperature, solids (such as salt or sugar) will
dissolve better in water. :Answer (a) law (states a consistently observed phenomenon, can be
used for prediction)
(b) theory (a widely accepted explanation of the behavior of matter)
(c) hypothesis (a tentative explanation, can be investigated by experimentation)
3. Identify each of the underlined items as a part of either the
macroscopic domain, the microscopic domain, or the symbolic
domain of chemistry. For those in the symbolic domain, indicate
whether they are symbols for a macroscopic or a microscopic
feature.
a.)The mass of a lead pipe is 14 lb.
b.) The mass of a certain chlorine atom is 35 amu.
c.)A bottle with a label that reads Al contains aluminum metal.
d.)Al is the symbol for an aluminum atom. :Answer a.) macroscopic
b.) microscopic
c.)Symbolic; microscopic
d.) Symbolic; microscopic
4. Identify each of the underlined items as a part of either the
macroscopic do- main, the microscopic domain, or the symbolic
domain of chemistry. For those in the symbolic domain, indicate
whether they are symbols for a macroscopic or a microscopic
,feature.
(a)A certain molecule contains one H atom and one Cl atom.
(b)Copper wire has a density of about 8 g/cm3.
(c)The bottle contains 15 grams of Ni powder.
(d)A sulfur molecule is composed of eight sulfur atoms. :Answer (a)
symbolic, microscopic
, (b) macroscopic
(c) symbolic, macroscopic
(d) microscopic
5. According to one theory, the pressure of a gas increases as its
volume de- creases because the molecules in the gas have to move a
shorter distance to hit the walls of the container. Does this theory
follow a macroscopic or microscopic description of chemical behavior?
Explain your answer. :Answer This theory follows microscopic description
molecules in the gas are determined on microscopic properties
6. The amount of heat required to melt 2 lbs of ice is twice the
amount of heat required to melt 1 lb of ice. Is this observation a
macroscopic or microscopic description of chemical behavior? Explain your
answer. :Answer This is a macroscopic observation.
Explanation :Answer
When you have something that It is depends on the mass, you can be sure that this is a macroscopic
description of chemical behavior, because macroscopic observation can be measured with extensive
magnitudes such as volume, mass, and length.
7. chemistry :Answer study of the composition, properties, and interactions of matter
8. hypothesis :Answer tentative explanation of observations that acts as a guide for gathering and
checking information
9. law :Answer statement that summarizes a vast number of experimental observations, and
describes or predicts some aspect of the natural world
10. macroscopic domain :Answer realm of everyday things that are large enough to
sense directly by human sight and touch
11. microscopic domain :Answer realm of things that are much too small to be sensed
directly
12. scientific method :Answer path of discovery that leads from question and
observation to law or hypothesis to theory, combined with experimental verification of the
hypothesis and any necessary modification of the theory
13. symbolic domain :Answer specialized language used to represent components of the
macroscopic and micro- scopic domains, such as chemical symbols, chemical formulas, chemical
WITH CORRECT QUESTIONS
AND ANSWERS
usr
[COMPANY NAME] [Company address]
,1. Explain how you could experimentally determine whether the
outside tem- perature is higher or lower than 0 °C (32 °F) without using
a thermometer? :Answer Place a glass of water outside. It will freeze if the temperature is
below 0 °C.
2. Identify each of the following statements as being most similar
to a hypoth- esis, a law, or a theory. Explain your reasoning.
(a)The pressure of a sample of gas is directly proportional to the
temperature of the gas.
(b)Matter consists of tiny particles that can combine in specific
ratios to form substances with specific properties.
(c) At a higher temperature, solids (such as salt or sugar) will
dissolve better in water. :Answer (a) law (states a consistently observed phenomenon, can be
used for prediction)
(b) theory (a widely accepted explanation of the behavior of matter)
(c) hypothesis (a tentative explanation, can be investigated by experimentation)
3. Identify each of the underlined items as a part of either the
macroscopic domain, the microscopic domain, or the symbolic
domain of chemistry. For those in the symbolic domain, indicate
whether they are symbols for a macroscopic or a microscopic
feature.
a.)The mass of a lead pipe is 14 lb.
b.) The mass of a certain chlorine atom is 35 amu.
c.)A bottle with a label that reads Al contains aluminum metal.
d.)Al is the symbol for an aluminum atom. :Answer a.) macroscopic
b.) microscopic
c.)Symbolic; microscopic
d.) Symbolic; microscopic
4. Identify each of the underlined items as a part of either the
macroscopic do- main, the microscopic domain, or the symbolic
domain of chemistry. For those in the symbolic domain, indicate
whether they are symbols for a macroscopic or a microscopic
,feature.
(a)A certain molecule contains one H atom and one Cl atom.
(b)Copper wire has a density of about 8 g/cm3.
(c)The bottle contains 15 grams of Ni powder.
(d)A sulfur molecule is composed of eight sulfur atoms. :Answer (a)
symbolic, microscopic
, (b) macroscopic
(c) symbolic, macroscopic
(d) microscopic
5. According to one theory, the pressure of a gas increases as its
volume de- creases because the molecules in the gas have to move a
shorter distance to hit the walls of the container. Does this theory
follow a macroscopic or microscopic description of chemical behavior?
Explain your answer. :Answer This theory follows microscopic description
molecules in the gas are determined on microscopic properties
6. The amount of heat required to melt 2 lbs of ice is twice the
amount of heat required to melt 1 lb of ice. Is this observation a
macroscopic or microscopic description of chemical behavior? Explain your
answer. :Answer This is a macroscopic observation.
Explanation :Answer
When you have something that It is depends on the mass, you can be sure that this is a macroscopic
description of chemical behavior, because macroscopic observation can be measured with extensive
magnitudes such as volume, mass, and length.
7. chemistry :Answer study of the composition, properties, and interactions of matter
8. hypothesis :Answer tentative explanation of observations that acts as a guide for gathering and
checking information
9. law :Answer statement that summarizes a vast number of experimental observations, and
describes or predicts some aspect of the natural world
10. macroscopic domain :Answer realm of everyday things that are large enough to
sense directly by human sight and touch
11. microscopic domain :Answer realm of things that are much too small to be sensed
directly
12. scientific method :Answer path of discovery that leads from question and
observation to law or hypothesis to theory, combined with experimental verification of the
hypothesis and any necessary modification of the theory
13. symbolic domain :Answer specialized language used to represent components of the
macroscopic and micro- scopic domains, such as chemical symbols, chemical formulas, chemical
