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11 8 Unit 4 Lesson 2

What are the products of rocket fuel and gasoline combustion?

QUESTION:  What are the products of rocket fuel and gasoline combustion? 

Learning Objectives:

  • Express combustion as a chemical equation with reactants and products
  • Explain the difference between hydrocarbon and hydrogen combustion
  • Describe a reactant and product in a chemical equation
  • Model combustion of gasoline on the observable and particle scale
  • Model combustion of hydrogen fuel on the observable and particle scale

Warm-up:

  • Attendance 
  • Open Student IMT Unit 4, make a copy, and save it to your drive. 
  • Write down the question for the day and complete the wonderings section for Lesson 1.  

IN-CLASS WORK:

  • Open L4.2 Student Activity Sheet make a copy and save it to your drive. 
  • Review L4.2 and complete all parts of the IMT for lesson 2.

OUT-OF-CLASS WORK:

  • Open IMT for Unit 4 and make sure all sections for lesson 2 are complete. Make sure student sheet L4.2 is complete.
  • Complete check for understanding on L4.2 material

L4.2 Student Sheet

**Lesson 4.2: What are the products of rocket fuel and gasoline?

INTRODUCTION:

  1. Open up your IMT for this unit, and fill in the question and wondering for lesson 2

WRITING CHEMICAL EQUATIONS: 

As we learned from the last lesson, carbon dioxide is a product of a combustion reaction, but How do we write chemical reactions?  Use this link to find out chemical reactions, word equations, 11.1 

  • Based on your reading, What is the word equation for methane and oxygen reacting? 

  • What are the reactants and products from this reaction? 

PREVIEW - READING: LIQUID HYDROGEN - THE FUEL OF CHOICE FOR SPACE EXPLORATION

  1. Read the article, Rocket Fuel, two times. The first time, focus on any similarities between how hydrogen is used in a rocket and how gasoline is used in a car. The second time, focus on any differences. 

Similarities 

Differences 

Rocket Fuel Equation

Gasoline Fuel Equation

What is a combustion reaction?

DEMONSTRATIONS of Combustion Reactions:

  1. Magnesium ribbon

Equation:

  1. CH4 (Methane) bubbles

Equation:

  • What is a combustion reaction?  

  • What do all combustion reactions have in common?

MODELING:

Let’s use the molecular model sets to model the rocket fuel equation and the gasoline (octane) fuel equation. Go to the lab tables to do this, when you have your models made, ask your teacher to check your work. Take a picture of your models and insert below. 

INVESTIGATION:

Model of Gasoline Combustion in a Car

BEFORE

DURING 

AFTER 

Chemicals involved

Molecular Model 

Insert photo here

Insert photo here

Insert photo here

Observable Scale

Model of Hydrogen Fuel Combustion in a Rocket

BEFORE

DURING 

AFTER 

Chemicals involved

Molecular model

Insert photo here

Insert photo here

Insert photo here

Observable Scale

FOLLOW UP QUESTIONS:

  1. Based on your model, which fuel type would you choose?  Explain your reasoning.

  2. What other questions should you ask and answer to support your decision?

  3. Summarize the necessary components of combustion reaction.

  4. Research why most cars run on gasoline and not rocket fuel.  Explain in a few sentences.  

NAMING HYDROCARBONS

read and watch the video in the saturated hydrocarbons section in the textbook. Answer the following questions.

  1. What is a saturated hydrocarbon?

  2. How are saturated hydrocarbon compounds named?

  3. When naming hydrocarbons, whatare the prefixes used when there is 1 carbon, 2 carbons, 3 carbons, 4 carbons?

  4. What is the name of the saturated hydrocarbons with the formulas, C3H8, C7H16, and C4H10?

NEXT STEPS:

  1. Reflect on today’s question: What are the products of rocket fuel and gasoline?

  2. Open up the IMT for this unit, complete all boxes for lesson 2

  3. Make sure all parts of the L4.2 student sheet are complete & complete the check for understanding on schoology.**

Last update: June 5, 2023
Created: June 5, 2023