CHM 151 RIO SALADO MIDTERM QUESTIONS AND
VERIFIED ANSWERS
Chemistry is the study of? - Answers - Matter
Is the statement "Falling barometric pressure preceded the onset of bad weather." a
hypothesis, theory, or a law? - Answers - 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? - Answers -
theory
Is the statement "My truck's gas mileage has dropped significantly, probably because
it's due for a tune-up." a hypothesis, theory, or a law? - Answers - hypothesis
The mass of a lead pipe is 14 lb. Is this observation in the microscopic domain,
macroscopic domain, or symbolistic domain? - Answers - Macroscopic domain
The mass of a certain chlorine atom is 35 amu. Is this observation in the microscopic
domain, macroscopic domain, or symbolic domain? - Answers - Microscopic domain
A bottle with a label that reads Al contains aluminum metal. Is this observation in the
microscopic domain, macroscopic domain, or symbolic domain? - Answers - Symbolic
domain
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? - Answers - Microscopic
Which of the following is a pure substance? - Answers - Table salt, water, baking soda
Which of the following is a heterogeneous mixture? - Answers - 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? - Answers -
Chemical Change
Which of the following is an example of a chemical change? - Answers - Burning of
magnesium
, 10.0 g of water freezing at 0 °C is an example of an intrinsic or extensive property? -
Answers - Intrinsic property
10.0 g of water that can occupy a 10.0 cm3 of volume is an example of an intrinsic or
extensive property? - Answers - Extensive property
How many significant figures does 2.015 have? - Answers - Four
What is the answer to the following equation with proper significant figures?
12.1 - 3.25/125 - Answers - 0.071
Which is the SI unit for volume? - Answers - L
How many cm are in 15 m? - Answers - 1500 cm
Convert 250 mL to L - Answers - 0.25L
Convert 450 mg to kg. - Answers - 0.00045 kg
If room temperature is usually defined as 25°, what is room temperature in Kelvin (k)? -
Answers - 298 K
How many cm are in 24 inches? - Answers - 60.96 cm
If the density of iron is 7.9 g/cm3, how much volume would 5.00 kg of iron occupy? -
Answers - 633 mL
If the density of mercury is 13.6 g/cm3, how much mass would be needed to fill a 3 L
vessel? - Answers - 221 g
How many significant figures should be in the answer of the following problem?
2.105 + 3.14 = - Answers - Three
How many significant figures should the answer of the following problem have?
(5500.1/6776) x 63690.1 = - Answers - Four
Accuracy is defined as how close a measured value comes to a _____. - Answers - true
value
Precision is defined as how _____ the measured values are to one another. - Answers -
reproducible
VERIFIED ANSWERS
Chemistry is the study of? - Answers - Matter
Is the statement "Falling barometric pressure preceded the onset of bad weather." a
hypothesis, theory, or a law? - Answers - 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? - Answers -
theory
Is the statement "My truck's gas mileage has dropped significantly, probably because
it's due for a tune-up." a hypothesis, theory, or a law? - Answers - hypothesis
The mass of a lead pipe is 14 lb. Is this observation in the microscopic domain,
macroscopic domain, or symbolistic domain? - Answers - Macroscopic domain
The mass of a certain chlorine atom is 35 amu. Is this observation in the microscopic
domain, macroscopic domain, or symbolic domain? - Answers - Microscopic domain
A bottle with a label that reads Al contains aluminum metal. Is this observation in the
microscopic domain, macroscopic domain, or symbolic domain? - Answers - Symbolic
domain
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? - Answers - Microscopic
Which of the following is a pure substance? - Answers - Table salt, water, baking soda
Which of the following is a heterogeneous mixture? - Answers - 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? - Answers -
Chemical Change
Which of the following is an example of a chemical change? - Answers - Burning of
magnesium
, 10.0 g of water freezing at 0 °C is an example of an intrinsic or extensive property? -
Answers - Intrinsic property
10.0 g of water that can occupy a 10.0 cm3 of volume is an example of an intrinsic or
extensive property? - Answers - Extensive property
How many significant figures does 2.015 have? - Answers - Four
What is the answer to the following equation with proper significant figures?
12.1 - 3.25/125 - Answers - 0.071
Which is the SI unit for volume? - Answers - L
How many cm are in 15 m? - Answers - 1500 cm
Convert 250 mL to L - Answers - 0.25L
Convert 450 mg to kg. - Answers - 0.00045 kg
If room temperature is usually defined as 25°, what is room temperature in Kelvin (k)? -
Answers - 298 K
How many cm are in 24 inches? - Answers - 60.96 cm
If the density of iron is 7.9 g/cm3, how much volume would 5.00 kg of iron occupy? -
Answers - 633 mL
If the density of mercury is 13.6 g/cm3, how much mass would be needed to fill a 3 L
vessel? - Answers - 221 g
How many significant figures should be in the answer of the following problem?
2.105 + 3.14 = - Answers - Three
How many significant figures should the answer of the following problem have?
(5500.1/6776) x 63690.1 = - Answers - Four
Accuracy is defined as how close a measured value comes to a _____. - Answers - true
value
Precision is defined as how _____ the measured values are to one another. - Answers -
reproducible
