Lesson 51 of 84 ยท Chemical Reactions
Experimentโญ 30 XP๐งช Potion KitchenProperties of Materials (Part 2)
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
A compound's properties differ from its elements. Sodium is a reactive metal and chlorine is a toxic gas, but together they form sodium chlorideโcommon table salt.
Key Words
- pH
- acid
- base
Materials Needed
- baking soda
- cups
- spoons
Safety First
- Tie back long hair before starting the experiment.
Steps
Read about Chemical Reactions and write down three key facts.
Conduct a chromatography experiment: use a coffee filter and markers to separate the pigments in different colored inks.
Watch carefully for any changes and note the time.
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What is a solution?
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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