Tuz ve Kumun Kademeli Kristallenmesi

Çözünürlük farklılıklarını kullanarak karışımı ayırma

Crystallization Beginner (Middle School) 35 dak ~$3,00

Hedef

Tuz ve kum karışımını kademeli kristallenme yöntemiyle ayırmak; çözme, süzme ve buharlaştırmalı kristallenmeyi göstermek.

Arka Plan

This classic separation technique exploits the fact that salt dissolves in water while sand does not. The mixture is dissolved in hot water, filtered to remove sand, and then the salt is recovered by evaporation. This is fundamentally how salt has been harvested from seawater for millennia.

Güvenlik Uyarıları

  • Handle hot evaporating dish with tongs
  • Do not heat to dryness too rapidly — spattering risk

Gerekli KKD

goggles

Malzemeler

  • Salt-sand mixture (10 g)
    Pre-mixed approximately 50:50
  • Distilled water (100 mL)

Ekipman

250 mL beaker Filter paper Funnel Evaporating dish Hot plate Stirring rod Analytical balance

Prosedür

1

Weigh 10 g of the salt-sand mixture and record the mass.

2 dak
2

Add the mixture to 100 mL of warm water in the beaker. Stir for 5 minutes to dissolve all the salt.

5 dak
3

Filter the mixture through filter paper. The sand remains on the filter; the salt solution passes through.

5 dak
4

Rinse the sand on the filter with a small amount of distilled water. Dry the sand and weigh it.

5 dak
5

Pour the filtrate into the evaporating dish. Heat gently on the hot plate to evaporate the water.

12 dak Remove from heat before completely dry
6

Once dry, weigh the recovered salt. Calculate the percentage of each component.

3 dak
7

Compare the total recovered mass with the initial mass. Calculate percent recovery.

3 dak

Beklenen Sonuçlar

The total mass of recovered salt + sand should be close to the original 10 g (typically 90-98% recovery). Some loss occurs during transfer and on filter paper. The separated components should be visually distinct.

Temizlik

Salt solution can go down the drain. Sand can go in the trash. Rinse all glassware.

Ayrıntılar

Kategori
Crystallization
Zorluk
Beginner (Middle School)
Süre
35 dak
Tahmini Maliyet
$3,00
Adımlar
7
Malzemeler
2

Daha Fazla Deney

Aşırı Doygunluk ve Anlık Kristallenme 35 min Bakır Sülfat Kristali Büyütme 30 min Benzoik Asidin Yeniden Kristallendirilmesi 45 min Bizmut Gökkuşağı Kristali Büyütme 45 min Salol (Fenil Salisilat) Kristallenmesi 30 min Şap Kristali Büyütme 30 min Şeker Kristali Akide Şekeri 25 min

Frequently Asked Questions

What is the objective of Tuz ve Kumun Kademeli Kristallenmesi?
Tuz ve kum karışımını kademeli kristallenme yöntemiyle ayırmak; çözme, süzme ve buharlaştırmalı kristallenmeyi göstermek.
How difficult is Tuz ve Kumun Kademeli Kristallenmesi?
This experiment is rated as Beginner (Middle School). It takes approximately 35 minutes to complete.
What safety precautions are needed for Tuz ve Kumun Kademeli Kristallenmesi?
Key safety precautions include: Handle hot evaporating dish with tongs; Do not heat to dryness too rapidly — spattering risk.
What materials are needed for Tuz ve Kumun Kademeli Kristallenmesi?
The main materials required are: Salt-sand mixture, Distilled water.
What results should I expect from Tuz ve Kumun Kademeli Kristallenmesi?
The total mass of recovered salt + sand should be close to the original 10 g (typically 90-98% recovery). Some loss occurs during transfer and on filter paper. The separated components should be visually distinct.