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Book 27, Question 128 · Video

How can you make rock candy?

Video · 1:43 · Crafty Clover explains, from A Million Whys Book 27

Rock candy is sugar crystals grown on a string or stick. A grown-up boils about three parts sugar to one part water until it clears, then lets it cool a little and pours it into a tall jar. A skewer rolled in sugar for seed crystals hangs in the middle. Over about a week, crystals gather on it. Keep the jar still and covered with a paper towel.

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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. How can you make rock candy?

The Big Idea

Rock candy is a treat you can grow! It's made of sugar crystals. Let's make some.

The Syrup

Step one: The Syrup. A grown-up boils about three parts sugar to one part water until it clears. Then they let it cool a little and pour it into a tall jar.

The Seed

Step two: The Seed. A skewer rolled in sugar for seed crystals hangs in the middle of the jar. The seed crystals give new sugar a place to attach.

Waiting

Step three: Waiting. Over about a week, crystals gather on the skewer. Keep the jar still and covered with a paper towel.

A Closer Look

Let's take a closer look! Lots of sugar. A little water. A seeded skewer. A tall jar.

Quick Facts

Quick facts! Bigger crystals need more time and a calm, still jar. Grown-ups boil the syrup. Seeds start the crystals. About a week.

Think Like a Scientist

Now, think like a scientist! Make rock candy with a grown-up. Use a string or a blunt wooden stick. Take a photo each day. Watch the crystals grow. Enjoy your treat at the end!

Outro

To make rock candy, a grown-up boils lots of sugar with a little water and pours it into a tall jar. A sugared skewer hangs inside, and over about a week, sugar crystals gather on it. Keep the jar still! Science is amazing! Remember, every big discovery starts with a small question. Keep looking, keep learning, and keep asking why! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this