Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

1. Matter and Measurements

Metric Prefixes

GOB Chemistry

1. Matter and Measurements

Metric Prefixes

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1:32 minutes

Problem 41c

Textbook Question

For each of the following pairs, which is the larger unit?
c. m or km

Verified step by step guidance

Understand the units: 'm' stands for meters, which is the base unit of length in the metric system, and 'km' stands for kilometers, which is a larger unit of length in the metric system.

Recall the relationship between meters and kilometers: 1 kilometer (km) is equal to 1000 meters (m). This means that a kilometer is a larger unit compared to a meter.

Compare the two units: Since 1 km = 1000 m, a kilometer represents a much larger distance than a single meter.

Conclude that the larger unit in this pair is the kilometer (km).

If needed, you can visualize this by thinking of a kilometer as the distance you might walk in about 10-15 minutes, while a meter is roughly the length of a large step.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Metric System

The metric system is an internationally recognized decimal system of measurement based on the meter, kilogram, and second. It is designed to provide a standard for measuring length, mass, and time, making conversions straightforward. Understanding the metric system is essential for comparing different units of measurement, such as centimeters (cm) and kilometers (km).

Unit Conversion

Unit conversion involves changing a measurement from one unit to another, which is crucial for comparing sizes of different units. In this case, converting centimeters to kilometers requires knowledge of the relationship between these units, specifically that 1 kilometer equals 100,000 centimeters. This concept helps in determining which unit is larger.

Magnitude of Units

The magnitude of units refers to the scale or size represented by different measurement units. In the context of length, kilometers represent larger distances compared to centimeters. Recognizing the relative magnitudes of these units is key to answering questions about which is larger, as it allows for a clear understanding of their differences.