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
Timberlake14thChemistry: 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
Timberlake14thChemistry: An Introduction to General, Organic, and Biological ChemistryISBN: 9781292472249Not the one you use?Change textbook
Chapter 2, Problem 7b
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.
Verified step by step guidance1
Identify the unit given in the problem: The unit provided is 'kg', which stands for kilograms.
Determine the type of measurement associated with kilograms: Kilograms are a unit of mass in the metric system.
Understand the context of the measurement: The problem states that the weight of a premature baby is being measured, which refers to the baby's mass.
State the name of the measurement: The name of the measurement is 'mass'.
Conclude the type of measurement: The type of measurement is 'metric mass', and the unit used is kilograms (kg).
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Mass Measurement
Mass measurement refers to the quantification of the amount of matter in an object, typically expressed in units such as kilograms (kg). In the context of the question, the weight of the premature baby is given as 1.9 kg, indicating the total mass of the baby. Understanding mass is crucial in fields like medicine and science, as it helps in assessing health and development.
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Metric System
The metric system is an international decimalized system of measurement used widely around the world. It includes units such as meters for length, liters for volume, and kilograms for mass. The use of kilograms in the measurement of the baby's weight signifies adherence to the metric system, which is essential for standardization in scientific and medical contexts.
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Weight vs. Mass
Weight and mass are often confused but represent different concepts. Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass. In this case, the measurement of 1.9 kg refers to the mass of the baby, but it is commonly understood as weight in everyday language. Recognizing this distinction is important in scientific discussions.
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Related Practice
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
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.
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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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