38

Lesson 38 of 84 ยท Chemical Reactions

Experimentโญ 30 XP๐Ÿงช Potion Kitchen

Changing States of Matter (Part 2)

๐ŸงชLab Brief #38

Chemical Reactions.

๐ŸŽฏ Your mission

Run the experiment. Find out what really happens.

โšก The twist

If it bubbles, something invisible is escaping.

๐Ÿคฏ

Mind = Blown

๐Ÿ’ง Hot water can freeze faster than cold water under the right conditions. Nobody fully understands why.

๐Ÿ”ฎ

Make a hypothesis first

Guess: will the fizz be loud, soft, or none at all?

What You'll Learn

When matter changes state, its particles move differently. Heating a solid makes particles vibrate faster until they break free and become a liquid, then a gas.

Key Words

Tap a word to see its definition.

Materials Needed

  • cups
  • spoons
  • food coloring
  • plastic bottles
  • balloons

Safety First

  • Wear safety goggles when mixing liquids.
  • Wash hands after handling materials.
  • Be careful with scissors โ€” ask an adult for help if needed.

Steps

Step 1 โ€” Read

Read the introduction and identify the main idea of this lesson.

Step 2 โ€” Do

Create a density column: carefully layer honey, dish soap, water, vegetable oil, and rubbing alcohol in a tall glass. Drop small objects in to test where they float.

Step 3 โ€” Observe

Use your senses (except taste) to describe what you notice.

Step 4 โ€” Record

Write a summary of your findings in 3-5 sentences.

Check Your Understanding

Question 1

1 of 3

What happens to particle motion when matter is heated?

๐ŸŒ

Where you see this in real life

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

๐Ÿ†

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€

๐ŸŽฏ

Next Smart Experiment

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

๐ŸงชShare card

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๐Ÿ–จ๏ธ

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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Changing States of Matter (Part 2) โ€” Chemical Reactions | 7th Grade Science | LittleActivity | LittleActivity