Limiting Reactants and Excess Reactants
Students will identify the limiting reactant in a chemical reaction and calculate the theoretical yield and amount of excess reactant remaining.
Key Questions
- Identify the limiting reactant in a chemical reaction given initial amounts of reactants.
- Calculate the theoretical yield of a product based on the limiting reactant.
- Explain why the reactant with the smallest mass is not always the limiting reactant.
Common Core State Standards
About This Topic
A Day in the Life of a Student analyzes the structure of the school day, subjects, and extracurricular options in various countries. For 9th graders, this topic is highly relevant as they are currently navigating their own high school experience. By comparing their schedules with those of students in the target culture, they gain a better understanding of different educational priorities and social norms. This aligns with ACTFL standards for presentational communication and global communities.
Students also explore how the physical environment of a school and the structure of the day (e.g., long lunch breaks, different start times) impact a student's stress levels and social life. This topic particularly benefits from hands-on, student-centered approaches where students can create and compare schedules, leading to a more nuanced view of what it means to be a student in a global context.
Active Learning Ideas
Inquiry Circle: The Global Schedule
Groups research the school schedule of a specific country, including start/end times, subjects, and break periods. They create a visual timeline and compare it to their own, identifying the biggest differences and similarities.
Think-Pair-Share: My Ideal School Day
Students discuss what they would change about their current school day based on what they've learned about other systems. They then share their 'ideal' schedule with a partner, using the target language to justify their choices.
Simulation Game: The New Student Orientation
In pairs, one student acts as a local student and the other as a new international student. They must explain the school's rules, schedule, and extracurricular options using the target language, focusing on clarity and helpfulness.
Watch Out for These Misconceptions
Common MisconceptionAll schools have the same subjects as US schools.
What to Teach Instead
Many countries prioritize different subjects, such as multiple languages or specialized vocational training. Using the 'Global Schedule' activity helps students see the wide variety of academic focuses around the world.
Common MisconceptionExtracurriculars are always part of the school day.
What to Teach Instead
In many cultures, sports and clubs are organized by the community rather than the school. Through peer discussion, students can explore how this changes the social life and time management of a typical teenager.
Suggested Methodologies
Ready to teach this topic?
Generate a complete, classroom-ready active learning mission in seconds.
Frequently Asked Questions
How can I make school vocabulary more interesting?
What is the best way to teach school-related verbs?
How can active learning help students understand school life?
How do I handle the topic of school stress and pressure?
Planning templates for Chemistry
More in Quantifying Chemistry: Stoichiometry
Percent Yield Calculations
Students will calculate the percent yield of a reaction and analyze factors that contribute to deviations from theoretical yield.
3 methodologies
Introduction to Kinetic Molecular Theory
Students will understand the postulates of the Kinetic Molecular Theory and how they explain the behavior of gases.
3 methodologies
Gas Pressure and Temperature Scales
Students will explore the concept of gas pressure, its units, and the necessity of using the Kelvin temperature scale for gas law calculations.
3 methodologies
Boyle's Law: Pressure-Volume Relationship
Students will investigate the inverse relationship between pressure and volume of a gas at constant temperature.
3 methodologies
Charles's Law: Volume-Temperature Relationship
Students will investigate the direct relationship between volume and temperature of a gas at constant pressure.
3 methodologies