Sandwich Science Slides Kitchen Chemistry
SANDWICH SCIENCE
Learning the Secret Recipe for Chemistry!
🍞
🧀
🥪
The Perfect Sandwich
To make one perfect sandwich, we need a special plan.
Think about it...
What ingredients do we need?
🥪
The Ingredients
🍞
2 BREAD
🧀
1 CHEESE
Chemistry Style!
Scientists write recipes using EQUATIONS.
🍞🍞
2 Bread
🧀
1 Cheese
🥪
1 Sandwich
Science Words
Reactants
The things we put IN to the recipe. (Like the bread and cheese!)
Products
The thing we get OUT at the end. (Like the finished sandwich!)
Sandwich Recipe Worksheet The Sandwich Equation
Kitchen Chemistry Lab #1
Name:
Date:
The Secret Recipe
In chemistry, we follow the formula exactly!
2 🍞 + 1 🧀 1 🥪
1 How many ingredients do we need to make these sandwiches?
🥪
1 Sandwich
🍞
Bread
🧀
Cheese
🥪 🥪
2 Sandwiches
🍞
Bread
🧀
Cheese
2 Draw a line to match the science word!
REACTANTS
PRODUCT
🥪
🍞 🧀
Chef's Challenge
If a chemist changes the recipe and uses 3 slices of bread for 1 sandwich, what happens to the formula? Draw the new equation below!
Kitchen Chemistry Answer Key Teacher Answer Key
Kitchen Chemistry Unit: Lessons 1-3
Reference Only
Lesson 1: Sandwich Recipe Worksheet
Part 1: Ingredients
1 Sandwich = 2 Bread, 1 Cheese
2 Sandwiches = 4 Bread, 2 Cheese
Part 2: Vocab Match
Reactants: Bread & Cheese
Product: Sandwich
Lesson 2: Batch Booster Worksheet
Part 1: 2 Sandwiches
Bread: 2 + 2 = 4
Cheese: 1 + 1 = 2
Part 2: 3 Sandwiches
Bread Skip Count: 2, 4, 6
Cheese Skip Count: 1, 2, 3
Lesson 3: Leftover Lab Worksheet
Challenge A (4 Bread, 1 Cheese)
Sandwiches possible: 1
Ran out first: Cheese
Challenge B (2 Bread, 10 Cheese)
Sandwiches possible: 1
Ran out first: Bread
Teaching Tip: For 1st graders, focus on the visual patterns of "running out" and "making groups". The goal is to build intuition for stoichiometry without needing formal multiplication or complex terminology until later years.
Batch Booster Slides Kitchen Chemistry Level 2
Doubling the Batch
What happens when the order gets BIGGER?
🥪
Order #1
🥪🥪
Double Order!
The Big Number Trick
In chemistry, we put a BIG NUMBER in front to show how many we are making.
This is called a COEFFICIENT.
(That's a giant word for a giant number!)
2
Sandwiches
Double Order Challenge
2 X
( 2 Bread + 1 Cheese )
🍞🍞🍞🍞
4 BREAD
🧀🧀
2 CHEESE
Party Order: Three!
3 Sandwiches
🍞
2 + 2 + 2 = 6
🧀
1 + 1 + 1 = 3
Chef's Rule #1
When you make more things, you need more of EVERY ingredient!
Just like a balanced equation!
Batch Booster Worksheet Batch Booster
Kitchen Chemistry Lab #2
Name:
2
The Big Coefficient
This big number means we are making the whole recipe two times!
2 Sandwiches
Equation: 2 (2 Bread + 1 Cheese)
🍞 Bread needed:
=
🧀 Cheese needed:
=
3 Sandwiches
Equation: 3 (2 Bread + 1 Cheese)
How much Bread? (Skip count by 2s!)
2,
,
Total Bread
How much Cheese? (Skip count by 1s!)
1,
,
Total Cheese
The Science Secret
If you see a 4 in front of the recipe, do you need more or less ingredients than a 2? Why?
Empty Pantry Slides Kitchen Chemistry Level 3
Empty Pantry
What happens when we run out of bread?
🍞
🧀
Empty!
The Sandwich Stopping Point
We want to make sandwiches for 5 friends.
🍞 10 SLICES
🧀 ONLY 2 SLICES
How many can we make?
🥪 🥪
STOP! OUT OF CHEESE!
The Limiting Ingredient
The ingredient that runs out first is the boss.
In chemistry, we call it the:
LIMITING REACTANT
It STOPS the reaction
It tells us the TOTAL
What is Left Over?
The Product
🥪🥪
2 Sandwiches
The Excess Reactant
🍞🍞🍞 🍞🍞🍞
6 Bread Left!
Lab Challenge!
Look at your ingredients...
🍞🍞
2 Bread
🧀🧀🧀
3 Cheese
Which one is Limiting?
Leftover Lab Worksheet Leftover Lab
Kitchen Chemistry Lab #3
Name:
Standard Recipe
Always use: 2 Bread + 1 Cheese = 1 Sandwich
🍞🍞 + 🧀 = 🥪
A You have: 4 Bread and 1 Cheese
How many sandwiches?
What ran out first?
Bread
Cheese
This is the Limiting Reactant!
B You have: 2 Bread and 10 Cheese
How many sandwiches?
What ran out first?
Bread
Cheese
This is the Limiting Reactant!
Science Thinking
In Challenge B, you have a lot of cheese left over. Why couldn't you use it to make more sandwiches?
Snack Formula Card Secret Snack Formula
Kitchen Chemistry Lab #4
Chef Name:
The Challenge
You are the Head Scientist at the Snack Lab! Your job is to create a new trail mix formula . Pick 2 ingredients and decide how many of each go into one bag.
Reactant #1
How many?
Ingredient Name
Reactant #2
How many?
Ingredient Name
The Big Equation
____ + ____ 1 Trail Mix
Product Sketch
Draw what one full bag of your snack looks like!
Picnic Planner Slides Kitchen Chemistry Finale
The Class Picnic
Calculating for the Whole Crowd!
🧺
🍎
🥨
The Big Mission
Today, we aren't making 1 snack.
We are making snacks for EVERYONE in our class!
Our Class Count: ____
🏫
The "Mega" Equation
?
X
Our Snack Formula
🥨 + 🍎
The COEFFICIENT (the big number) is now the total number of students!
The Grocery List
Strategy 1
Repeated Addition: Add the same ingredient for every student.
2 + 2 + 2 + 2...
Strategy 2
Skip Counting: Count by the number in the formula.
2, 4, 6, 8, 10...
Ready to Shop!
When a chemist knows how much they need for one, they can calculate for a thousand!
🍞 🥪 🧀
Picnic Planning Sheet Picnic Planning Sheet
Kitchen Chemistry Finale
Group:
Our Class Snack Formula
🥨🥨
2 Pretzels
🍎
1 Apple Slice
1 Snack
Step 1: The Class Count
How many students are in our class today? (This is our Big Coefficient!)
Step 2: Total Ingredients
🥨 Total Pretzels
Use skip counting by 2s or addition:
Total: ________
🍎 Total Apple Slices
How many groups of 1?
Total: ________
The Balanced Class Equation
____ ( 2🥨 + 1🍎 )
Ready for the Picnic!
