Everyone knows water is made of hydrogen and oxygen ... but how much of each? Science scholars explore percent composition through a video from JFR Science. The narrator provides background information, time-saving tips, and example problems for a brief but well-rounded lesson.

Concepts

percents, chemical compounds, chemical formulas, molar mass, elements

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Additional Tags

science

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Instructional Ideas

• Make the video the lead-in for a percent composition lesson
• Have pupils work the problems in the video, then assign individual problems as a formative check

Classroom Considerations

• Learners should be comfortable with molar mass and chemical formulas before beginning percent composition
  

• This video is hosted on YouTube

Pros

• Narrator uses a great analogy of the makeup of Earth and the human body to convey the fundamentals of the topic
• Problems worked during the video are done so in a logical, step-wise manner
  

Cons

• None

Common Core

SL.9-10.2