Lesson 1. Lesson 1: Phenomenon Introduction

Carole Namowicz
Chemistry
50 min
High School Honors Chemistry
v2

Overview

Students are introduced to the phenomenon. First they will view a SodaStream advertisement, then they will be asked to brainstorm what a makes a fizzy drink fizzy. The phenomenon introduction closes with a teacher demonstration where a carbonated beverage is produced before their eyes without the aid of a SodaStream.

Standards

Next Generation Science Standards
  • Physical Science
  • NGSS Practice
    • Using Mathematics
  • NGSS Crosscutting Concept
    • Energy
Computational Thinking in STEM
  • Data Practices
    • Analyzing Data
  • Modeling and Simulation Practices
    • Assessing Computational Models
    • Using Computational Models to Understand a Concept
  • Systems Thinking Practices
    • Defining Systems and Managing Complexity
    • Thinking in Levels
    • Understanding the Relationships within a System

Credits

Unit designed by Carole Namowicz a teacher at Lindblom.

Activities

  • 1. What makes a fizzy drink fizzy?
  • 2. SodaStream Operation
  • 3. Demonstration
  • 4. Class Discussion
  • 5. Thinking About Data

Student Directions and Resources


What makes a fizzy drink fizzy? Do we have to have an expensive gadget to do it, or can we make a drink fizzy without one?

1. What makes a fizzy drink fizzy?


Watch the video below and answer the question that follows.

 


Question 1.1

1. What is the SodaStream adding to water to make it fizzy? Make your answer as detailed as possible.

2. SodaStream Operation



Question 2.1

1. Now that you have seen how the SodaStream operates, do you still agree with your explanation of what the SodaStream is adding to the water to make it fizzy? Answer yes or no and explain your answer.



Question 2.2

2. What is inside of the "carbonator" that helps to create a fizzy drink?

3. Demonstration


Watch your instructor perform a demonstration and answer the questions below.


Question 3.1

1. You observed your instructor create a fizzy drink without the aid of a SodaStream. How is this possible? Describe what you believe occurred when the two solids were added to the water to the best of your ability.



Question 3.2

2. Compare and contrast the fizzy drink created by the SodaStream in the videos to the fizzy drink created by your instructor. Be sure to describe both similarities and differences between the two types of fizzy drinks.

4. Class Discussion


Your class will discuss your answers to how both the SodaStream and your instructor were able to add bubbles to a beverage.


Question 4.1

1. What is carbonation?



Question 4.2

2. What evidence do you have that a chemical reaction occurred when your instructor mixed two solutions together to carbonate a beverage?



Question 4.3

3. What is a chemical reaction?

5. Thinking About Data


Imagine you have a two identical bottles of water, both are 1 liter bottles. You plan to use the SodaStream to carbonate one of the bottles, and the method your instructor showed your class to carbonate the other. What type of data might you acquire before and after carbonation in order to compare methods?


Question 5.1

Describe the data you will acquire BEFORE carbonating both bottles of water. Be thorough with your descriptions and also include the type of equipment you will need to conduct your measurements.



Question 5.2

Now describe the data to acquire AFTER carbonating both bottles of water. Again, be thorough with your descriptions and include the type of equipment you will need to conduct your measurements (even if it is the same as in your before carbonation answer).



Question 5.3

A student collected data before carbonating water, the data is shown below. Predict what after data might look like for the SodaStream method of carbonation.

            Before          
Volume (mL) 1000 mL
Mass of water + bottle (g) 1019.4 g
Mass of bottle (g) 21.4 g
Mass of water (calculated) 998 g
Density (g/mL) 0.998 g/mL

 



Question 5.4

Now use that same before carbonation data to predict what after data might look like for the method of carbonation your instructor demonstrated.

            Before          
Volume (mL) 1000 mL
         Mass of water + bottle (g)          1019.4 g
Mass of bottle (g) 21.4 g
Mass of water (calculated) 998 g
Density (g/mL)           0.998 g/mL