زراعة بلورات كبريتات النحاس

إنتاج بلورات زرقاء كبيرة بالتبخر البطيء

Crystallization Beginner (Middle School) 30 دقيقة ~$8,00

الهدف

زراعة بلورات كبريتات النحاس الخماسي الماء الكبيرة والمتشكلة جيداً باستخدام طريقة التبخر البطيء، مما يوضح التشبع الفائق وتكوين الشبكة البلورية.

الخلفية

Copper sulfate pentahydrate (CuSO₄·5H₂O) forms beautiful blue triclinic crystals. By preparing a saturated solution and allowing it to evaporate slowly over several days, large single crystals can be grown. The process demonstrates concepts of solubility, supersaturation, and crystal nucleation.

تحذيرات السلامة

  • Copper sulfate is toxic if ingested
  • Wear gloves when handling the solution
  • Wash hands thoroughly after the experiment
  • Do not dispose of copper sulfate down the drain

معدات الوقاية الشخصية المطلوبة

goggles gloves

المواد

  • Copper(II) sulfate pentahydrate (50 g)
    Blue crystals
  • Distilled water (200 mL)
    Hot
  • Thread or fishing line (30 cm)
    For seed crystal
  • Pencil or stick (1)
    To suspend seed crystal

المعدات

400 mL beaker Hot plate Stirring rod Filter paper Funnel

الإجراء

1

Heat 200 mL of distilled water to 60-70°C. Add copper sulfate gradually while stirring until no more dissolves (saturated solution).

10 دقيقة Wear gloves — copper sulfate is toxic
2

Filter the hot saturated solution through filter paper to remove any undissolved particles.

5 دقيقة
3

Pour a small amount into a petri dish and allow it to cool. Select the best small crystal as a seed crystal after 24 hours.

5 دقيقة
4

Tie the seed crystal to a thread and suspend it from a pencil placed across the top of the beaker of saturated solution.

5 دقيقة
5

Cover the beaker loosely with filter paper to allow slow evaporation. Place in a vibration-free location.

2 دقيقة
6

Check daily for crystal growth. Remove any small crystals that form on the thread or beaker walls.

3 دقيقة

النتائج المتوقعة

After 1-2 weeks, the seed crystal should grow into a large blue crystal (1-3 cm) with well-defined facets. The crystal has a triclinic shape with distinct flat faces. Faster evaporation produces many small crystals; slower produces fewer, larger ones.

التنظيف

Collect excess copper sulfate solution and solid for reuse or proper disposal in heavy metal waste. Do not pour down the drain.

Frequently Asked Questions

What is the objective of زراعة بلورات كبريتات النحاس?
زراعة بلورات كبريتات النحاس الخماسي الماء الكبيرة والمتشكلة جيداً باستخدام طريقة التبخر البطيء، مما يوضح التشبع الفائق وتكوين الشبكة البلورية.
How difficult is زراعة بلورات كبريتات النحاس?
This experiment is rated as Beginner (Middle School). It takes approximately 30 minutes to complete.
What safety precautions are needed for زراعة بلورات كبريتات النحاس?
Key safety precautions include: Copper sulfate is toxic if ingested; Wear gloves when handling the solution; Wash hands thoroughly after the experiment.
What materials are needed for زراعة بلورات كبريتات النحاس?
The main materials required are: Copper(II) sulfate pentahydrate, Distilled water, Thread or fishing line, Pencil or stick.
What results should I expect from زراعة بلورات كبريتات النحاس?
After 1-2 weeks, the seed crystal should grow into a large blue crystal (1-3 cm) with well-defined facets. The crystal has a triclinic shape with distinct flat faces. Faster evaporation produces many small crystals; slower produces fewer, larger ones.