Nuôi Tinh Thể Đồng Sunfat

Tạo tinh thể màu xanh lớn bằng bay hơi chậm

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

Mục tiêu

Nuôi tinh thể đồng sunfat pentahydrat lớn và đẹp bằng phương pháp bay hơi chậm, minh họa sự quá bão hòa và hình thành mạng tinh thể.

Bối cảnh

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.

Cảnh báo an toàn

  • 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

PPE cần thiết

goggles gloves

Vật liệu

  • 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

Thiết bị

400 mL beaker Hot plate Stirring rod Filter paper Funnel

Quy trình

1

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

10 phút Wear gloves — copper sulfate is toxic
2

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

5 phút
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 phút
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 phút
5

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

2 phút
6

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

3 phút

Kết quả dự kiến

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.

Dọn dẹp

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

Chi tiết

Danh mục
Crystallization
Độ khó
Beginner (Middle School)
Thời gian
30 phút
Chi phí ước tính
$8,00
Số bước
6
Vật liệu
4

Thí nghiệm khác

Kẹo Đường Kết Tinh 25 min Kết Tinh Lại Axit Benzoic 45 min Kết Tinh Phân Đoạn Muối và Cát 35 min Kết Tinh Salol (Phenyl Salixyat) 30 min Nuôi Tinh Thể Bismut Cầu Vồng 45 min Nuôi Tinh Thể Phèn Chua 30 min Quá Bão Hòa và Kết Tinh Tức Thì 35 min

Frequently Asked Questions

What is the objective of Nuôi Tinh Thể Đồng Sunfat?
Nuôi tinh thể đồng sunfat pentahydrat lớn và đẹp bằng phương pháp bay hơi chậm, minh họa sự quá bão hòa và hình thành mạng tinh thể.
How difficult is Nuôi Tinh Thể Đồng Sunfat?
This experiment is rated as Beginner (Middle School). It takes approximately 30 minutes to complete.
What safety precautions are needed for Nuôi Tinh Thể Đồng Sunfat?
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 Nuôi Tinh Thể Đồng Sunfat?
The main materials required are: Copper(II) sulfate pentahydrate, Distilled water, Thread or fishing line, Pencil or stick.
What results should I expect from Nuôi Tinh Thể Đồng Sunfat?
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.