Lesson 38 of 84 · Reaction Rates
Experiment⭐ 30 XP🧪 Potion KitchenBacteria and Viruses
Reaction Rates.
🎯 Your mission
Predict it first. Then prove yourself right (or wrong).
⚡ The twist
Mixing two safe things doesn't always make a safe thing.
Mind = Blown
💧 Hot water can freeze faster than cold water under the right conditions. Nobody fully understands why.
Make a hypothesis first
Predict: will the mixture get hotter, colder, or stay the same?
What You'll Learn
Bacteria are tiny single-celled organisms that live almost everywhere, and while some cause disease, many are helpful, like those that break down food in our intestines. Viruses are even smaller and can only reproduce by invading the living cells of another organism.
Key Words
Tap a word to see its definition.
Materials Needed
- tape
- small pots
- cotton balls
- zip-lock bags
Safety First
- Do not look directly at the sun or bright lights.
- Clean up spills immediately to prevent slipping.
Steps
Read the introduction and identify the main idea of this lesson.
Compare the skeletal structures of a bird wing, human arm, and whale flipper using diagrams. Identify homologous bones and write what this tells us about common ancestry.
Use your senses (except taste) to describe what you notice.
Write a summary of your findings in 3-5 sentences.
Check Your Understanding
Question 1
1 of 3Which animals go through metamorphosis?
Where you see this in real life
This is happening in your kitchen right now — every time food cooks.
Stretch Challenge
Try this in real life this week.
Find one ingredient in a snack and look up what it does.
For the dinner table
“What's something we cook that mixes things together this way?”
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.
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