Questions and Answers
What instrument is used to determine the amount of heat generated in a chemical reaction?
Which instrument is a measuring probe used to measure an object's electrical conductance?
What is a balance with three different scales used for?
What instrument measures the temperature of a substance?
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What tool is used to remove small, exact amounts of liquid?
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What instrument measures small masses?
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What instrument is used to accurately measure the volume of solutions?
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What common glassware is used to mix chemicals but does not accurately measure volume?
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What is a precise measuring tool for liquid volumes that is tall and narrow?
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What is similar to a beaker but has a narrow opening?
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Why is it important to tare?
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How could you measure the volume of a gas?
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Which two tools are most accurate for measuring liquid volumes?
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The volume in this graduated cylinder is ____.
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The mass read from this triple beam balance is ____.
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The mass read from this triple beam balance is ____.
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The mass read from this triple beam balance is ____.
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Study Notes
Laboratory Instruments and Their Functions
- Calorimeter: Used to measure heat changes during chemical reactions, including heat generated, transformed, or absorbed.
- Conductivity Meter: A probe designed to assess an object's electrical conductance.
- Triple Beam Balance: A balance equipped with three scales for precise measurement of mass.
- Thermometer: An instrument for measuring the temperature of substances.
- Pipette: A tool for transferring small, exact volumes of liquid between containers.
- Electric Mass Balance: Designed to measure small masses accurately.
Glassware Used in Measurements
- Volumetric Flask: Essential for accurately measuring solution volumes when dissolving solids.
- Beaker: Common glassware for mixing, heating, or cooling solutions, but not for precise volume measurement.
- Graduated Cylinder: A tall, narrow measuring tool with marked graduations used for accurate liquid volume measurements.
- Erlenmeyer Flask: Similar to a beaker but features a narrow neck to minimize splashing.
Measurement Techniques and Practices
- Taring Importance: Necessary to ensure only the substance’s mass is measured, excluding the container's weight.
- Gas Volume Measurement: The volume of gas can be determined by knowing the volume of its container.
- Accurate Liquid Measurement Tools: Graduated cylinders and volumetric flasks are the most accurate for measuring liquid volumes.
Practice Readings
- Graduated Cylinder Reading: Example measurement can be 6.6 mL, with emphasis on identifying the meniscus.
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Triple Beam Balance Readings: Various example mass readings include:
- 290.4 g
- 57.3 g
- 107.7 g
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Description
Test your knowledge of key instruments used in chemistry with these flashcards from IPC Unit 2 Lesson 9. Each card will help you define important tools such as the calorimeter and triple beam balance. Perfect for students looking to master their understanding of measurement instruments in chemical reactions.
