58

Lesson 58 of 84 ยท Matter and Atoms

Experimentโญ 30 XP๐Ÿงช Potion Kitchen

Reading Chemical Formulas (Part 2)

๐ŸงชLab Brief #58

Matter and Atoms.

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

Chemical formulas show the types and numbers of atoms in a molecule. COโ‚‚ has one carbon and two oxygen atoms. The subscript tells how many of each atom.

Key Words

Tap a word to see its definition.

Materials Needed

  • thermometer
  • strainer
  • ice cubes
  • salt
  • sugar

Safety First

  • Adult supervision recommended.
  • Do not taste any materials.
  • Wear safety goggles when mixing liquids.

Steps

Step 1 โ€” Read

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

Step 2 โ€” Do

Build a model of an atom using craft supplies. Show protons, neutrons, and electrons in the correct arrangement. Label each particle.

Step 3 โ€” Observe

Watch carefully for any changes and note the time.

Step 4 โ€” Record

Create a data table to organize your measurements.

Check Your Understanding

Question 1

1 of 3

What type of substance speeds up a chemical reaction without being used up?

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.

๐Ÿ”ฌShare card

Share this experiment

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

๐Ÿ–จ๏ธ

Checkout complete lesson on Matter and Atoms for 7th Grade

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

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Reading Chemical Formulas (Part 2) โ€” Matter and Atoms | 7th Grade Science | LittleActivity | LittleActivity