Ch 11: Quantifying Atoms
About This Chapter
Quantifying Atoms - Chapter Summary
During the process of going through these lessons, you can make sure you truly understand the process of quantifying atoms. This interactive chapter can assist you with understanding key topics like how we can count and measure atoms even though they are tiny. After reviewing the lessons, you should be ready to:
- Discuss the use of gas chromatography and mass spectrometry
- Explain Avogadro's number
- Define and calculate molar mass
These lessons can assist you with quickly getting up to speed on quantifying atoms. Our instructors guide you through each lesson while providing a fun learning experience. Vocabulary words are highlighted in bold for quick reference. Each lesson includes a full written transcript that you can print and use as a study guide.

1. Gas Chromatography & Mass Spectrometry
Scientists interested in identifying the individual chemicals in a mixture use an instrumental method called gas chromatography mass spectrometry or GC-MS. Continue reading to learn about the ins and outs of this fascinating chemistry technique.

2. Avogadro's Number: Using the Mole to Count Atoms
Atoms are microscopic and challenging to count as a result. Learn about the importance of understanding the mole, which is simply a large number or quantity of something, also known as Avogadro's number, and how it helps scientists count large numbers of atoms.

3. What is Molar Mass? - Definition, Formula & Examples
Molar mass is a unit of calculation that describes the sum of the mass of a substance per mole. Learn the formula used to calculate the molar mass of substances, and understand its usefulness through an example problem.
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Other Chapters
Other chapters within the VCE Chemistry: Exam Prep & Study Guide course
- Steps of the Scientific Method
- Designing Scientific Experiments
- Procedures of Scientific Investigation
- Lab & Science Safety
- Drawing Conclusions & Communicating Scientific Ideas
- Atoms & Atomic Structure
- Understanding Elements & Periodicity
- Block & Group Elements
- Metals in Chemistry
- Ionic Compounds
- Materials From Molecules
- Carbon Lattices & Nanomaterials
- Properties of Organic Compounds
- Polymer Basics
- Elements in the Universe
- Alchemy, Chemistry & the Periodic Table
- Lanthanoids & Actinoids
- Using Light to Solve Chemical Puzzles
- Properties of Glass
- Crude Oil & the Environment
- Surfactants
- Polymers, Composite Materials & Nanomaterials
- Properties of Water in Chemistry
- Acid-Base Reactions
- Redox Reactions
- Water Sample Analysis
- Measurement of Solubility & Concentration
- Analysis for Salts in Water
- Organic Compounds in Water
- Acids & Bases in Water
- Fuel Choices
- Energy From Fuels
- Fuel Cells & Galvanic Cells
- Rate & Extent of Chemical Changes
- Production of Chemicals by Electrolysis
- Analyzing Organic Compounds
- Key Food Molecules
- Metabolism in the Human Body
- VCE Chemistry Flashcards