Chemistry 108 Exam #1 – Study Guide, Practice Test & Chemistry
Review
The base unit of length in the metric system is the - ANS ✔✔meter
The mass of an object is - ANS ✔✔a measure of the amount of matter in a object
The land surface of the earth is approximately 1.49 x 10^8 km^2. What is the correct way to
write this in conventional notation? - ANS ✔✔149,000,000
A common piece of laboratory glassware is a 125 mL beaker. What is the volume of this piece of
glassware in the English system of units? (1 oz. = 29.57 mL) - ANS ✔✔4.23 oz
Which of the hollowing is the correct scientific notation for the measurement 0.000375 g - ANS
✔✔3.75 x 10^-4
How many milliliter are in 2.6 liters of saline solution? - ANS ✔✔2600 mL
Determine whether the measurements below are precise, accurate or both. The standard is
225.0 mg/dL (error allowance is + or - 0.2 mg/dL). Test 1: 224.04 mg/dL Test 2: 228.0 mg/dL Test
3: 224.9 mg/dL Test 4: 226.3 mg/dL - ANS ✔✔Not precise but appears to be accurate compared
to standard
Multiply 23.4 g and 0.0051 g and report in the correct amount of significant figures. - ANS
✔✔0.12 g
How many cm are there in 6.3 feet to the correct significant figures? (1 in = 2.54 cm; 1 ft = 12 in)
- ANS ✔✔190 cm
, The densities of the coin metals are as follows: copper= 8.95 g/mL silver= 12.59 g/mL gold=
19.32 g/mL. A piece of unknown metal was found to weigh 15.03 grams and have a volume of
1.20 mL. This is likely a sample of which of the coin metals above? - ANS ✔✔Silver= 12.59 g/mL
If urine has a density of 1.08 g/mL, what would be the mass of a 125 mL urine sample? - ANS
✔✔135 g
The boiling point of liquid nitrogen is 77 degrees Fahrenheit. What is this temperature in
Celsius? - ANS ✔✔25 degrees Celsius
If a patient weighs 202 pounds, how many kilograms does he weigh? (1kg= 2.20 lbs) - ANS
✔✔91.8 kg
What is a chemical substance that can be broken down into its components easily? - ANS
✔✔Mixture
Which of the following sequences give the correct order in general as we move from left to right
across the periodic table? - ANS ✔✔Metals, Metalloids, Nonmetals
Which of the following are classified as intensive properties of a 1g of sulfur? - ANS ✔✔It's
yellow, density= 1.819 g/mL, smells of rotten eggs, and is a nonmetal
An example of a heterogeneous mixture is - ANS ✔✔Pulpy orange juice
The horizontal rows on the periodic table are called - ANS ✔✔periods
The vertical columns on the periodic table are called - ANS ✔✔groups
Review
The base unit of length in the metric system is the - ANS ✔✔meter
The mass of an object is - ANS ✔✔a measure of the amount of matter in a object
The land surface of the earth is approximately 1.49 x 10^8 km^2. What is the correct way to
write this in conventional notation? - ANS ✔✔149,000,000
A common piece of laboratory glassware is a 125 mL beaker. What is the volume of this piece of
glassware in the English system of units? (1 oz. = 29.57 mL) - ANS ✔✔4.23 oz
Which of the hollowing is the correct scientific notation for the measurement 0.000375 g - ANS
✔✔3.75 x 10^-4
How many milliliter are in 2.6 liters of saline solution? - ANS ✔✔2600 mL
Determine whether the measurements below are precise, accurate or both. The standard is
225.0 mg/dL (error allowance is + or - 0.2 mg/dL). Test 1: 224.04 mg/dL Test 2: 228.0 mg/dL Test
3: 224.9 mg/dL Test 4: 226.3 mg/dL - ANS ✔✔Not precise but appears to be accurate compared
to standard
Multiply 23.4 g and 0.0051 g and report in the correct amount of significant figures. - ANS
✔✔0.12 g
How many cm are there in 6.3 feet to the correct significant figures? (1 in = 2.54 cm; 1 ft = 12 in)
- ANS ✔✔190 cm
, The densities of the coin metals are as follows: copper= 8.95 g/mL silver= 12.59 g/mL gold=
19.32 g/mL. A piece of unknown metal was found to weigh 15.03 grams and have a volume of
1.20 mL. This is likely a sample of which of the coin metals above? - ANS ✔✔Silver= 12.59 g/mL
If urine has a density of 1.08 g/mL, what would be the mass of a 125 mL urine sample? - ANS
✔✔135 g
The boiling point of liquid nitrogen is 77 degrees Fahrenheit. What is this temperature in
Celsius? - ANS ✔✔25 degrees Celsius
If a patient weighs 202 pounds, how many kilograms does he weigh? (1kg= 2.20 lbs) - ANS
✔✔91.8 kg
What is a chemical substance that can be broken down into its components easily? - ANS
✔✔Mixture
Which of the following sequences give the correct order in general as we move from left to right
across the periodic table? - ANS ✔✔Metals, Metalloids, Nonmetals
Which of the following are classified as intensive properties of a 1g of sulfur? - ANS ✔✔It's
yellow, density= 1.819 g/mL, smells of rotten eggs, and is a nonmetal
An example of a heterogeneous mixture is - ANS ✔✔Pulpy orange juice
The horizontal rows on the periodic table are called - ANS ✔✔periods
The vertical columns on the periodic table are called - ANS ✔✔groups
