45 ml of water
10 ml graduated cylinder
Proper Equipment
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100 ml graduated cylinder
Question 1 of 6
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Practice selecting the proper equipment for accurate measurement of chemicals. InstructionsChoose the equipment that provides the most accurate measurement for the described volume.Select "Next" for a new description.
Select the i button before beginning the activity.
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Correct. A graduated cylinder is best for measuring accurate liquid volumes greater than a few milliliters. When the desired volume is between 20 and 200 mL, a 100 ml graduated cylinder is usually the most accurate.
Incorrect. Consider the volume and type of chemical being measured and try again.
100 ml beaker
measuring spoon
½ teaspoon of a powdered chemical
Question 2 of 6
Correct. Small solid volumes, such as a teaspoon of a powdered chemical, can be measured accurately in a small spoon or cup with graduated markings. When available, a metric scale that measures the amount of powder in grams or milligrams is more accurate.
graduated pipette
Question 3 of 6
124 ml of water
Correct. Although a 100 mL graduated cylinder cannot measure 124 mL at one time, this cylinder still measures a volume less than 200 mL more accurately than a beaker. First, measure and transfer part of the volume (for example, 80 mL), then measure and transfer the remaining amount (for example, 44 mL).
Question 4 of 6
Correct. A graduated cylinder is best for measuring accurate liquid volumes greater than a few milliliters. When the desired volume is between 2 and 20 mL, a 10 ml graduated cylinder is usually the most accurate.
6 ml of a chemical solution
Question 5 of 6
1.5 ml of water
Correct. Although a 10 mL graduate cylinder measures 1.5 mL accurately, a volume less than 2 mL is unlikely to be completely transferred out of the cylinder when poured. A graduated pipette facilitates complete transfer of small liquid volumes from one container to another, increasing accuracy of the final volume delivered.
Correct. A graduated cylinder is best for measuring accurate liquid volumes greater than a few milliliters. When the desired volume is between 2 and 20 mL, a 10 ml graduated cylinder is usually the most accurate. Great job. You have practiced identifying the proper equipment to measure volumes.
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9.8 ml of a chemical solution
Question 6 of 6