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Measurement and Data Processing

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Uncertainties and errors in measurement

Subtopic

Uncertainties and errors in measurement under Measurement and Data Processing for Grade 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    A student measures the mass of a beaker as 45.67 g45.67\text{ g}. What is the absolute uncertainty assumed if not stated?

    A.

    ±0.01 g\pm 0.01\text{ g}

    B.

    ±0.1 g\pm 0.1\text{ g}

    C.

    ±0.001 g\pm 0.001\text{ g}

    D.

    ±1 g\pm 1\text{ g}

  2. 2.

    Which of the following terms describes the spread of a set of measurements around the mean value?

    A.

    Accuracy

    B.

    Precision

    C.

    Error

    D.

    Validity

  3. 3.

    How many significant figures are in the number 0.00100.0010?

    A.

    1

    B.

    2

    C.

    3

    D.

    4

Download the worksheet for Measurement and Data Processing - Uncertainties and errors in measurement to practice offline. It includes additional chapter-level practice questions.

Graphical techniques

Subtopic

Graphical techniques under Measurement and Data Processing for Grade 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    What is the benefit of using a graph rather than a table of values?

    A.

    It is easier to see the overall trend and relationship

    B.

    It takes less time to prepare

    C.

    It requires no calculation of units

    D.

    It shows the raw data more precisely

  2. 2.

    On a graph, if the error bars for different points overlap significantly on the y-axis, what does this suggest?

    A.

    The results are highly accurate

    B.

    The difference between those points may not be statistically significant

    C.

    The experiment was perfect

    D.

    The gradient is zero

  3. 3.

    Which of the following values for a gradient represents the steepest line?

    A.

    0.50.5

    B.

    1.21.2

    C.

    −2.5-2.5

    D.

    0.10.1

Download the worksheet for Measurement and Data Processing - Graphical techniques to practice offline. It includes additional chapter-level practice questions.

Spectroscopic identification of organic compounds

Subtopic

Spectroscopic identification of organic compounds under Measurement and Data Processing for Grade 11 IB.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following gives the ratio of the number of protons in different environments in 1H^{1}H NMR?

    A.

    Chemical shift

    B.

    Number of signals

    C.

    Integration trace

    D.

    Splitting pattern

  2. 2.

    Calculate the IHD for ethane nitrile, CH3CNCH_{3}CN.

    A.

    0

    B.

    1

    C.

    2

    D.

    3

  3. 3.

    What is the function of the magnetic field in a mass spectrometer?

    A.

    To ionize the sample

    B.

    To vaporize the sample

    C.

    To deflect the ions based on their mass-to-charge ratio

    D.

    To accelerate the ions towards the detector

Download the worksheet for Measurement and Data Processing - Spectroscopic identification of organic compounds to practice offline. It includes additional chapter-level practice questions.

Measurement and Data Processing - Grade 11 Chemistry (IB) | Krit.club