Lesson 18 of 84 ยท Chemical Reactions
Experimentโญ 30 XP๐งช Potion KitchenThermal Energy and Heat Transfer
Chemical Reactions.
๐ฏ Your mission
Predict it first. Then prove yourself right (or wrong).
โก The twist
Color changes mean atoms are rearranging โ even if you can't see them.
Mind = Blown
๐งช If you could remove all the empty space from atoms, the entire human race would fit in a sugar cube.
Make a hypothesis first
Before you mix: what color do you think it'll turn?
What You'll Learn
Thermal energy transfers from warmer objects to cooler ones through conduction (direct contact), convection (fluid movement), and radiation (electromagnetic waves).
Key Words
- acid
- base
Materials Needed
- measuring cups
- paper towels
- thermometer
Safety First
- Tie back long hair before starting the experiment.
- Protect your work surface with newspaper or plastic.
Steps
Read the introduction and identify the main idea of this lesson.
Separate a mixture of sand, salt, and iron filings using a magnet, water, and a filter. Record each step and what you separated.
Look for patterns in your observations.
Make a graph or chart showing your results.
Check Your Understanding
Question 1
1 of 3Which has a pH below 7?
Where you see this in real life
This is happening in your kitchen right now โ 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
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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