Lesson 50 of 84 ยท Chemical Reactions
Experimentโญ 30 XP๐งช Potion KitchenDissolving: Making Solutions (Part 2)
Chemical Reactions.
๐ฏ Your mission
Run the experiment. Find out what really happens.
โก The twist
If it bubbles, something invisible is escaping.
Mind = Blown
๐ง Hot water can freeze faster than cold water under the right conditions. Nobody fully understands why.
Make a hypothesis first
Guess: will the fizz be loud, soft, or none at all?
What You'll Learn
Endothermic reactions absorb heat from surroundings, making things feel cold. Exothermic reactions release heat, like combustion. Both types of reactions are essential in nature.
Key Words
- pH
- acid
- base
Materials Needed
- vinegar
- baking soda
- cups
- spoons
- food coloring
Safety First
- Use materials only as directed in the experiment.
Steps
Study the diagram and label the parts you recognize.
Build a model of an atom using craft supplies. Show protons, neutrons, and electrons in the correct arrangement. Label each particle.
Observe what happens and describe it in detail.
Record your observations in your science journal with measurements and descriptions.
Check Your Understanding
Question 1
1 of 3What is a solvent?
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
โWhat's something we cook that mixes things together this way?โ
Next Smart Experiment
We'll pick an experiment that matches exactly how you're thinking right now.
Share this experiment
Send it to a parent who's looking for a 10-minute kitchen science win.
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.
