After viewing a model of salt, students help develop models for the processes of salt dissolving, water evaporating to form a gas, and salt re-forming as a crystal. The focus is that matter, whether ...

Snowflakes form when a cold water droplet freezes onto particulates (like dust or pollen) in the atmosphere, creating an ice crystal. As the ice crystal falls through the sky, water vapor deposits ...

A team of chemists and agriculture specialists has developed a way to transform urea in wastewater, into percarbamide, which ...

When a liquid metal cools and turns into a solid, its atoms come together to form crystals. The structure of these crystals is not perfect. Sometimes an extra layer of atoms squeezes between other ...

Icicles form when water droplets freeze as they flow downwards ... Frost is what we call the tiny white ice crystals on surfaces outside, like leaves or the grass. Water vapour lands on a cold ...