physical properties

Floating Squares - Introduction

Introduction to the floating squares demonstration shows the preparation of the square of paper rubbed with graphite on one side.

Plastic Sulfur - Part 2 of 5

Solid sulfur is placed in a beaker and then heated in a bunsen burner flame. As the solid is heated, it begins to melt and a reddish brown liquid forms.

Plastic Sulfur - Part 3 of 5

As molten sulfur is heated to 180 degrees Celsius, the free-flowing liquid thickens and becomes very viscous.

Plastic Sulfur - Part 4 of 5

When viscous molten sulfur is heated to 200 degrees Celsius, more S-S bonds break and the sample is able to flow.