Book 27, Question 62 · Video
What is freezer burn?
Freezer burn happens when frozen food loses moisture. Water slowly turns from ice straight into vapor and escapes from the food, then re-freezes as frosty crystals inside the package. The food becomes dry, pale, and tough in spots. It is not dangerous, but it doesn't taste as good. Wrapping food tightly and removing air keeps crystals from forming.
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What Crafty Clover says in this video
Intro
Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. What is freezer burn?
The Big Idea
Ever found frosty, dry patches on frozen food? That's freezer burn! Let's see what causes it.
Losing Moisture
Step one: Losing Moisture. Freezer burn happens when frozen food loses moisture. Water slowly turns from ice straight into vapor and escapes from the food.
Frosty Crystals
Step two: Frosty Crystals. The vapor refreezes as frosty crystals inside the package. The food becomes dry, pale, and tough in spots.
Not Dangerous
Step three: Not Dangerous. Freezer burn is not dangerous, but the food doesn't taste as good. Wrapping food tightly and removing air keeps crystals from forming.
A Closer Look
Let's take a closer look! Ice in food. It becomes vapor. Frost forms. Wrap tightly.
Quick Facts
Quick facts! This change from ice straight to vapor is called sublimation. Not dangerous to eat. Wrap food tightly. Remove extra air.
Think Like a Scientist
Now, think like a scientist! With a grown-up, look inside a frozen food bag. Look for frost crystals. Where are they? Think about how better packing could help. Try squeezing out the air!
Outro
Freezer burn happens when ice in frozen food turns straight into vapor, escapes, and refreezes as frost. The food gets dry and tough but isn't dangerous. Wrap it tightly to prevent it. Good wrapping keeps food tasty. Squeeze out the air. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!