CHM151 / CHEM 151 / |! |! |! |! |!
CHEM151 Midterm Exam Rio |! |! |! |!
Salado with verified answers |! |! |!
Chemistry is the study of? - Correct answer ✔Matter
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Is the statement "Falling barometric pressure preceded the onset of bad
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weather." a hypothesis, theory, or a law? - Correct answer ✔Law
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Is the statement "All life on Earth has evolved from a common, primitive
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organism through the process of natural selection." a hypothesis, theory, or a
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law? - Correct answer ✔theory
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Is the statement "My truck's gas mileage has dropped significantly, probably
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because it's due for a tune-up." a hypothesis, theory, or a law? - Correct
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answer ✔hypothesis |!
The mass of a lead pipe is 14 lb. Is this observation in the microscopic
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domain, macroscopic domain, or symbolistic domain? - Correct answer
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✔Macroscopic domain |!
The mass of a certain chlorine atom is 35 amu. Is this observation in the
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microscopic domain, macroscopic domain, or symbolic domain? - Correct
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answer ✔Microscopic domain
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, A bottle with a label that reads Al contains aluminum metal. Is this
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observation in the microscopic domain, macroscopic domain, or symbolic
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domain? - Correct answer ✔Symbolic domain
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According to one theory, the pressure of a gas increases as its volume
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decreases because the molecules in the gas have to move a shorter distance
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to hit the walls of the container. Does this theory follow a macroscopic or
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microscopic description of chemical behavior? - Correct answer ✔Microscopic
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Which of the following is a pure substance? - Correct answer ✔Table salt,
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water, baking soda |! |!
Which of the following is a heterogeneous mixture? - Correct answer ✔oil and
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vinegar, salad dressing
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A 2.0-liter volume of hydrogen gas combined with 1.0 liter of oxygen gas to
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produce 2.0 liters of water vapor. Does oxygen undergo a chemical or physical
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change? - Correct answer ✔Chemical Change
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Which of the following is an example of a chemical change? - Correct answer
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✔Burning of magnesium |! |!
10.0 g of water freezing at 0 °C is an example of an intrinsic or extensive
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property? - Correct answer ✔Intrinsic property
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CHEM151 Midterm Exam Rio |! |! |! |!
Salado with verified answers |! |! |!
Chemistry is the study of? - Correct answer ✔Matter
|! |! |! |! |! |! |! |!
Is the statement "Falling barometric pressure preceded the onset of bad
|! |! |! |! |! |! |! |! |! |! |!
weather." a hypothesis, theory, or a law? - Correct answer ✔Law
|! |! |! |! |! |! |! |! |! |!
Is the statement "All life on Earth has evolved from a common, primitive
|! |! |! |! |! |! |! |! |! |! |! |! |!
organism through the process of natural selection." a hypothesis, theory, or a
|! |! |! |! |! |! |! |! |! |! |! |!
law? - Correct answer ✔theory
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Is the statement "My truck's gas mileage has dropped significantly, probably
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because it's due for a tune-up." a hypothesis, theory, or a law? - Correct
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answer ✔hypothesis |!
The mass of a lead pipe is 14 lb. Is this observation in the microscopic
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domain, macroscopic domain, or symbolistic domain? - Correct answer
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✔Macroscopic domain |!
The mass of a certain chlorine atom is 35 amu. Is this observation in the
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microscopic domain, macroscopic domain, or symbolic domain? - Correct
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answer ✔Microscopic domain
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, A bottle with a label that reads Al contains aluminum metal. Is this
|! |! |! |! |! |! |! |! |! |! |! |! |!
observation in the microscopic domain, macroscopic domain, or symbolic
|! |! |! |! |! |! |! |! |!
domain? - Correct answer ✔Symbolic domain
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According to one theory, the pressure of a gas increases as its volume
|! |! |! |! |! |! |! |! |! |! |! |! |!
decreases 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? - Correct answer ✔Microscopic
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Which of the following is a pure substance? - Correct answer ✔Table salt,
|! |! |! |! |! |! |! |! |! |! |! |! |!
water, baking soda |! |!
Which of the following is a heterogeneous mixture? - Correct answer ✔oil and
|! |! |! |! |! |! |! |! |! |! |! |!
vinegar, salad dressing
|! |! |!
A 2.0-liter volume of hydrogen gas combined with 1.0 liter of oxygen gas to
|! |! |! |! |! |! |! |! |! |! |! |! |! |!
produce 2.0 liters of water vapor. Does oxygen undergo a chemical or physical
|! |! |! |! |! |! |! |! |! |! |! |! |!
change? - Correct answer ✔Chemical Change
|! |! |! |! |!
Which of the following is an example of a chemical change? - Correct answer
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✔Burning of magnesium |! |!
10.0 g of water freezing at 0 °C is an example of an intrinsic or extensive
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property? - Correct answer ✔Intrinsic property
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