Demonstration: This experiment works more easily than that with water and is less expensive.

Practical Activity 14-16

Class practical

Practical Activity 14-16

Demonstration: This shows the volume change as liquid nitrogen changes into a gas.

Practical Activity 14-16

Class practical: This is a magnificent experiment, which at the outset may not appear very exciting.

Practical Activity 14-16

Class practical

Practical Activity 14-16

Demonstration

Practical Activity 14-16

Class practical: Here students have the satisfaction of growing their own crystals. This is a wonderful experience.

Practical Activity 14-16

Class practical: An opportunity to look more extensively at the nature of crystals. Students are often fascinated by crystals...

Practical Activity 14-16

Class practical: looking for crystalline structures in each specimen.

Practical Activity 14-16

Class practical: This is a fascinating experiment. The sight of the edges of the crystal moving across the slide will never be...

Practical Activity 14-16

Class practical: As the crystal grows, its characteristic shape is seen.

Practical Activity 14-16

Class practical: This apparently trivial experiment can lead young students into interesting discussions.

Practical Activity 14-16