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Solutions and Salt Investigation
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Solutions and Salt Investigation
🧪 Part 1: Scientific Method & Vocabulary
1. Write our investigation question for today's experiment:
2. What is your hypothesis? (Predict how temperature and stirring will affect salt dissolving)
3. Match the vocabulary terms to their definitions:
Solution
Solvent
Solute
Solubility
Saturation
Agitation
The substance being dissolved (salt)
Stirring or mixing action
The liquid doing the dissolving (water)
How much solute can dissolve in a solvent
A mixture where one substance dissolves in another
When no more solute can dissolve
📊 Part 2: Data Recording & Observations
4. Record your experimental results in the table below:
| Water Temperature | Stirring Condition | Time to Dissolve (seconds) | Observations |
|---|---|---|---|
| Cold (~10°C) | No stirring | ||
| Cold (~10°C) | Stirring | ||
| Room temp (~20°C) | No stirring | ||
| Room temp (~20°C) | Stirring | ||
| Warm (~40°C) | No stirring | ||
| Warm (~40°C) | Stirring |
5. Which condition dissolved salt the fastest?
Cold water with no stirringCold water with stirringWarm water with no stirringWarm water with stirring
6. Draw a particle-level diagram showing salt dissolving in water:
🤔 Part 3: Analysis & Real-World Connections
7. Explain why temperature affects how quickly salt dissolves (think about particle movement):
8. Explain why stirring helps salt dissolve faster:
9. Give two real-life examples where understanding solubility is important:
Example 1: _________________________________
Example 2: _________________________________
10. Was your hypothesis correct? Explain what you learned from this investigation:
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