Lesson 11 of 84 ยท Chemical Reactions
Lessonโญ 30 XP๐งช Potion KitchenAcids and Bases
Chemical Reactions.
๐ฏ Your mission
Learn the rule. Then catch nature using it.
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
Acids have a pH below 7 and taste sour, while bases have a pH above 7 and feel slippery. A pH of 7 is neutral, like pure water.
Key Words
- isotope
- chemical bond
Steps
Read about Chemical Reactions and write down three key facts.
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.
Look for patterns in your observations.
Make a graph or chart showing your results.
Check Your Understanding
Question 1
1 of 3What happens to water when it freezes?
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
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