25

Lesson 25 of 84 ยท Chemical Reactions

Lessonโญ 30 XP๐Ÿงช Potion Kitchen

Matter and Its Properties

๐ŸงชLab Brief #25

Chemical Reactions.

๐ŸŽฏ Your mission

Understand the idea. Then look for it everywhere.

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

Phase diagrams show how temperature and pressure affect the state of matter. Water's triple point is where solid, liquid, and gas phases all exist simultaneously.

Key Words

  • reactant
  • product
  • conservation of mass

Steps

Step 1 โ€” Read

Study the diagram and label the parts you recognize.

Step 2 โ€” Do

Test how temperature affects dissolving: dissolve sugar in cold, warm, and hot water. Count stirs needed for each and create a data table.

Step 3 โ€” Observe

Look for patterns in your observations.

Step 4 โ€” Record

Make a graph or chart showing your results.

Check Your Understanding

Question 1

1 of 3

Which state of matter fills its entire container?

๐ŸŒ

Where you see this in real life

Your toothpaste, your soap, even your breakfast involves this.

๐Ÿ†

Stretch Challenge

Try this in real life this week.

Ask a grown-up to help you mix two safe kitchen things. Predict what will happen first.

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

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 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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Matter and Its Properties โ€” Chemical Reactions | 7th Grade Science | LittleActivity | LittleActivity