Even though their solution is clear they often have pink crystals form after heating.

The amount of vitamin C decreases by about 40 percent after heating.

If you have access to a scale that is sensitive to within +/- 0.0001g, you could measure the mass of an egg before and after heating.

A quick way to find out is to measure how much water an egg displaces before and after heating.

About a decade ago, for example, researchers developed metal alloys that could return to their former shape after heating.

After heating, how does this structure change?

The samples were subjected to microscopic, chemical and extract analysis before and after heating.

Chemical analysis of coals after heating at 400 C for three days showed them to have a residual gas-generating capacity.

The vegetable has a rough skin which is difficult to peel, but which softens after heating.

Paraffin wax, which is solid before heating and liquid after heating.