Lesson 4 of 84 · Properties of Matter
Experiment⭐ 30 XP🧪 Potion KitchenChanging States: Melting and Freezing
Properties of Matter.
🎯 Your mission
Run the experiment. Find out what really happens.
⚡ The twist
Color changes mean atoms are rearranging — even if you can't see them.
Mind = Blown
🌈 Every color you see is your brain inventing a translation of light frequencies.
Make a hypothesis first
Before you mix: what color do you think it'll turn?
What You'll Learn
Physical changes alter the appearance of matter without changing its chemical identity. Cutting paper, melting ice, and dissolving sugar are all physical changes.
Key Words
- atom
- element
Materials Needed
- vinegar
- baking soda
- cups
- spoons
- food coloring
- plastic bottles
Safety First
- Be careful with scissors — ask an adult for help if needed.
- Do not look directly at the sun or bright lights.
- Clean up spills immediately to prevent slipping.
Steps
Review the background information on Properties of Matter before starting.
Heat ice and record the temperature every minute as it melts and then boils. Graph the temperature changes and label each phase change.
Look for patterns in your observations.
Make a graph or chart showing your results.
Check Your Understanding
Question 1
1 of 3Which is an example of a chemical change?
Where you see this in real life
Your toothpaste, your soap, even your breakfast involves this.
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.
For the dinner table
“What's something we cook that mixes things together this way?”
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