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Lesson 55 of 84 ยท Chemical Reactions

Simulationโญ 30 XP๐Ÿงช Potion Kitchen

Crystals: How They Form (Part 2)

๐ŸงชLab Brief #55

Chemical Reactions.

๐ŸŽฏ Your mission

Push the limits. See what changes.

โšก The twist

Mixing two safe things doesn't always make a safe thing.

๐Ÿคฏ

Mind = Blown

๐ŸŒˆ Every color you see is your brain inventing a translation of light frequencies.

๐Ÿ”ฎ

Make a hypothesis first

Predict: will the mixture get hotter, colder, or stay the same?

What You'll Learn

Crystallization occurs when a solution becomes supersaturated and dissolved particles form an orderly solid structure. Snowflakes, salt crystals, and rock candy form this way.

Key Words

  • base
  • endothermic

Steps

Step 1 โ€” Read

Study the diagram and label the parts you recognize.

Step 2 โ€” Do

Heat ice and record the temperature every minute as it melts and then boils. Graph the temperature changes and label each phase change.

Step 3 โ€” Observe

Compare the before and after states.

Step 4 โ€” Record

Write your conclusion: did the results match your hypothesis? What would you change next time?

Check Your Understanding

Question 1

1 of 3

What is the chemical formula for water?

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Where you see this in real life

This is happening in your kitchen right now โ€” every time food cooks.

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Stretch Challenge

Try this in real life this week.

Find one ingredient in a snack and look up what it does.

๐Ÿ‘จโ€๐Ÿ‘ฉโ€๐Ÿ‘ง

For the dinner table

โ€œWhat's something we cook that mixes things together this way?โ€

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Next Smart Experiment

We'll pick an experiment that matches exactly how you're thinking right now.

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Share this experiment

Send it to a parent who's looking for a 10-minute kitchen science win.

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Checkout complete lesson on Chemical Reactions for 7th Grade

Get the full Chemical Reactions track as a printable PDF โ€” all lessons, worksheets, and answer keys.

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Crystals: How They Form (Part 2) โ€” Chemical Reactions | 7th Grade Science | LittleActivity | LittleActivity