ORGANIC AND BIOLOGICAL
CHEMISTRY EXAM 1 QUESTIONS AND
ANSWERS 2025/2026
What is the correct scientific notation for 200,000? - CORRECT ANSWER-2 x 10*5
What is the correct scientific notation for 10000? - CORRECT ANSWER-1 x 10*4
What is the meaning of 4.32 x 10-2? - CORRECT ANSWER-0.043*2
What is the meaning of 4.32 x 103? - CORRECT ANSWER-4320
Arrange the following values from smallest (top) to largest (bottom) - CORRECT ANSWER-10*-5, 10*-3,
10*-2, 1, 10*1, 10*4, 10*6
Select the appropriate value for each part of the equation. - CORRECT ANSWER-3.4 feet * 12 inches/ 1
foot= 40.8 inches
Is the measurement quantitative or qualitative? - CORRECT ANSWER-Quantitative- The patient weighs
150 lbs., The patient's fever is 38.1 C
Qualitative- That object is beautiful, That shirt is orange, The patient's pain level is 5
Determine if the measurement is metric or English. - CORRECT ANSWER-Metric- Add 25 g of salt, The
patient is 130 centimeters tall, Walk 500 meters
,English- The patient weighs 150 pounds, Add one cup of sugar to the solution, Walk 500 miles
Match the unit to the measurements. - CORRECT ANSWER-Length- Meters, Feet
Volume- Liters, Cups
Weight/Mass- Grams, Pounds
Calculate the density of solution A if its mass is 10 grams and its volume is 15 mL. - CORRECT ANSWER-
0.67 g/mL
Which would have the most mass, and consequently the higher value: an ounce of gold, a pound of gold,
or a kilogram of gold? - CORRECT ANSWER-a kilogram of gold
How many inches are in 1.3 yards? - CORRECT ANSWER-46.8 inches
Calculate the volume of a solution that has a density of 1.5 g/mL and a mass of 3.0 grams. - CORRECT
ANSWER-2.0 mL
How many cups is 150 mL? - CORRECT ANSWER-0.625 c
10*3 represents _________________ and is __________________ 10*-3? - CORRECT ANSWER-one
thousand, larger than
Rank the following values of length from smallest to largest. - CORRECT ANSWER-1 mm, 1cm, 1 inch, 1
foot
, Select any quantitative measurements? - CORRECT ANSWER-The lemon weighed 4.5 oz.
The temperature is 98.6 :F
The pitcher was 15.0 cm tall
Which of the following is NOT part of the scientific method?
Benchmarking
Results
Hypothesis
Experiment - CORRECT ANSWER-Benchmarking
What is the purpose of a negative control?
To provide a point of comparison
To disprove the experiment
To disprove the hypothesis
To act as an unknown - CORRECT ANSWER-To provide a point of comparison
Before we continue on with the next steps of the scientific method by continuing to look at this real
world situation, try your hand at formulating a hypothesis based on the following situation:
The premium gas at the pump is more expensive and you wonder if this gas will improve your gas
mileage.
Possible hypothesis:
The premium gas will improve the performance of your car.
The premium gas will improve the gas mileage of your vehicle as compared to standard unleaded gas.
The premium gas is more costly
I wonder if the gas will make my car go further. - CORRECT ANSWER-The premium gas will improve the
gas mileage of your vehicle as compared to standard unleaded gas.