Textbook Question
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
a. The clotting time for a blood sample is 15 s.
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Ch.2 Chemistry and Measurements
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249
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Table of contents
- Ch.1 Chemistry in Our Lives19
- Ch.2 Chemistry and Measurements80
- Ch.3 Matter and Energy53
- Ch.4 Atoms and Elements58
- Ch.5 Nuclear Chemistry42
- Ch.6 Ionic and Molecular Compounds57
- Ch.7 Chemical Quantities and Reactions38
- Ch.8 Gases30
- Ch.9 Solutions50
- Ch.10 Acids and Bases and Equilibrium64
- Ch.11 Introduction to Organic Chemistry: Hydrocarbons77
- Ch.12 Alcohols, Thiols, Ethers, Aldehydes, and Ketones82
- Ch.13 Carbohydrates54
- Ch.14 Carboxylic Acids, Esters, Amines, and Amides91
- Ch.15 Lipids61
- Ch.16 Amino Acids, Proteins, and Enzymes84
- Ch.17 Nucleic Acids and Protein Synthesis86
- Ch.18 Metabolic Pathways and ATP Production73
Timberlake14th EditionChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 2, Problem 7d
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
d. An infant has a temperature of 39.2 °C.
Verified step by step guidance1
Identify the unit of measurement provided in the problem. In this case, the unit is °C, which stands for degrees Celsius.
Understand the type of measurement associated with the unit. Degrees Celsius is a unit used to measure temperature.
Determine the name of the measurement. The name of the measurement is 'temperature,' which refers to the degree of heat or coldness of an object or environment.
Classify the type of measurement. Temperature is a physical property and is considered a quantitative measurement because it involves numerical values.
Conclude that the problem is describing the temperature of an infant, measured in degrees Celsius (°C), which is a quantitative measurement of heat.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Temperature Measurement
Temperature measurement refers to the process of quantifying the degree of heat present in a substance or environment. It is typically expressed in units such as degrees Celsius (°C), Fahrenheit (°F), or Kelvin (K). In the context of the question, the infant's temperature of 39.2 °C indicates a specific measurement of body heat, which is crucial for assessing health.
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Units of Measurement
Units of measurement are standardized quantities used to express physical quantities. In this case, degrees Celsius (°C) is the unit used for measuring temperature, which is part of the metric system. Understanding the unit is essential for interpreting the measurement accurately and comparing it with normal temperature ranges.
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Normal Body Temperature Range
The normal body temperature range for a healthy human is typically around 36.1 °C to 37.2 °C (97 °F to 99 °F). A temperature of 39.2 °C indicates a fever, which can be a sign of infection or illness. Recognizing this range is important for evaluating health conditions and determining when medical attention may be necessary.
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Related Practice
Textbook Question
Use the metric ruler to measure the length in each of the following, and write the measurement, the estimated digit, and the number of significant figures:
a. <IMAGE>
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Textbook Question
In which of the following pairs do both numbers contain the same number of significant figures?
a. 11.0 m and 11.00 m
b. 0.0250 m and 0.205 m
c. 0.000 12 s and 12 000 s
d. 250.0 L and 2.5 × 10-2 L
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Textbook Question
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
b. A premature baby weighs 1.9 kg.
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Textbook Question
On a typical day, Sandra may encounter several situations involving measurement. State the name and type of measurement indicated by the units in each of the following:
c. An antacid tablet contains 1.0 g of calcium carbonate.
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Textbook Question
In which of the following pairs do both numbers contain the same number of significant figures?
a. 0.005 75 g and 5.75 × 10-3 g
b. 405 K and 405.0 K
c. 150 000 s and 1.50 × 104 s
d. 3.8 × 10-2 L and 3.0 × 105 L
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