Equipment and Technology Quick Check. 1. What would you use if you needed to measure volume with one-milliliter precision? (1 point) A. a volumetric flask B. an Erlenmeyer flask C. a graduated cylinder D. a beaker 2. Why wouldn’t you use a beaker to measure an exact volume? (1 point) A. It does not have volume markings. B. The volume markings are not in small enough increments. C. The volume of liquid in a beaker may change. D. It is not large enough. 3. Which piece of glassware is cone shaped except for a cylinder-shaped opening? (1 point) A. beaker B. Erlenmeyer flask C. burette D. pipette 4. Which is an electronic device that might be used for analyzing data? (1 point) A. a balance B. a calculator C. a stopwatch D. a pH probe 5. Which type of glassware would most likely be used as a reaction vessel? (1 point) A. a beaker B. a volumetric flask C. an Erlenmeyer flask D. a burette
2. is wrong answer is The volume markings are not in small enough increments everything else is right
Apologies for the mistake. You are correct. The correct answer for question 2 should be B. The volume markings are not in small enough increments.
1. A. a volumetric flask
2. B. The volume markings are not in small enough increments.
3. B. Erlenmeyer flask
4. B. a calculator
5. C. an Erlenmeyer flask
1. To measure volume with one-milliliter precision, you would use C. a graduated cylinder. A graduated cylinder is a piece of glassware that has volume markings etched on its sides, allowing you to measure volume accurately.
2. The correct answer is B. The volume markings on a beaker are not in small enough increments to measure an exact volume. Beakers typically have markings every 50 or 100 milliliters, making it difficult to measure volumes precisely.
3. The correct answer is B. An Erlenmeyer flask is cone-shaped with a cylinder-shaped opening. This shape allows for easy mixing and swirling of liquids while preventing splashing.
4. The correct answer is B. A calculator is an electronic device that is commonly used for analyzing data. It helps with calculations, conversions, and other mathematical operations that may be required in data analysis.
5. The correct answer is C. An Erlenmeyer flask is most commonly used as a reaction vessel. Its wide base and narrow neck make it suitable for containing and mixing liquids during chemical reactions. It also allows for easy attachment of stoppers and other devices.
1. C. a graduated cylinder
2. A. It does not have volume markings.
3. B. Erlenmeyer flask
4. B. a calculator
5. A. a beaker