Chem 103 Final UPDATED ACTUAL Exam
Questions and CORRECT Answers
The definition of a scientific law is - CORRECT ANSWER -a number of similar
observations generalized into a brief statement summarizing past observations and predicting
new ones
what term best describes a number of similar observations generalized into a brief statement
summarizing past observations and predicting new ones - CORRECT ANSWER -
scientific law
what statements about a hypothesis are true - CORRECT ANSWER -its a part of the
scientific method
potential to be proven wrong
tenative explanation or intrepretation
can be tested by experiments
what is the definition of a scientific theory - CORRECT ANSWER -a model that explains
the underlying reasons for observations and laws
A sample of wood with a mass of 3.0 grams was burned in an open dish. The ashes weighed 1.2
grams. What happened to the rest of the wood? - CORRECT ANSWER -the remaining 1.8
grams was converted into gaseous compounds
which of the following would be considered a theory? - CORRECT ANSWER -b. helium
ballons float due to helium being less dense than air
these items do have chemicals - CORRECT ANSWER -air, drain cleaner, insecticides,
organic grown vegetables
, which of the following statements about soda pop is false - CORRECT ANSWER -D.The
carbon dioxide is forced to mix with the water by the presence of sugars
which statement best describes the purpose of experiments - CORRECT ANSWER -D.
experiments look for other observable predictions of a theory
The key to success in chemistry is: - CORRECT ANSWER -practice.
mathematical skills.
commitment.
curiosity.
convert 0.000000000172 to scientific notation - CORRECT ANSWER -1.72*10^-10
convert 0.00000045 to scientific notation - CORRECT ANSWER -4.5*10^-7
The correct decimal representation of 6.453 × 10^3 is: - CORRECT ANSWER -
D.6.5*10^3
middle mark between 25 and 26 - CORRECT ANSWER -25.5
estimated digit in 48.93 - CORRECT ANSWER -3
amount of sig figs in 865,000 - CORRECT ANSWER -ambiguous
how many sig figs in 0.027090 - CORRECT ANSWER -5
how many sig figs in 9.080*10^4 - CORRECT ANSWER -4
Questions and CORRECT Answers
The definition of a scientific law is - CORRECT ANSWER -a number of similar
observations generalized into a brief statement summarizing past observations and predicting
new ones
what term best describes a number of similar observations generalized into a brief statement
summarizing past observations and predicting new ones - CORRECT ANSWER -
scientific law
what statements about a hypothesis are true - CORRECT ANSWER -its a part of the
scientific method
potential to be proven wrong
tenative explanation or intrepretation
can be tested by experiments
what is the definition of a scientific theory - CORRECT ANSWER -a model that explains
the underlying reasons for observations and laws
A sample of wood with a mass of 3.0 grams was burned in an open dish. The ashes weighed 1.2
grams. What happened to the rest of the wood? - CORRECT ANSWER -the remaining 1.8
grams was converted into gaseous compounds
which of the following would be considered a theory? - CORRECT ANSWER -b. helium
ballons float due to helium being less dense than air
these items do have chemicals - CORRECT ANSWER -air, drain cleaner, insecticides,
organic grown vegetables
, which of the following statements about soda pop is false - CORRECT ANSWER -D.The
carbon dioxide is forced to mix with the water by the presence of sugars
which statement best describes the purpose of experiments - CORRECT ANSWER -D.
experiments look for other observable predictions of a theory
The key to success in chemistry is: - CORRECT ANSWER -practice.
mathematical skills.
commitment.
curiosity.
convert 0.000000000172 to scientific notation - CORRECT ANSWER -1.72*10^-10
convert 0.00000045 to scientific notation - CORRECT ANSWER -4.5*10^-7
The correct decimal representation of 6.453 × 10^3 is: - CORRECT ANSWER -
D.6.5*10^3
middle mark between 25 and 26 - CORRECT ANSWER -25.5
estimated digit in 48.93 - CORRECT ANSWER -3
amount of sig figs in 865,000 - CORRECT ANSWER -ambiguous
how many sig figs in 0.027090 - CORRECT ANSWER -5
how many sig figs in 9.080*10^4 - CORRECT ANSWER -4
