ScienceIQ.com

Chemistry Facts

Why Does Cement Set?

Concrete has been known for literally thousands of years. It is a testament to the enduring strength of this material that concrete structures from those long-ago times are still standing strong ... Continue reading

Image of microstucture predicted from a NIST-developed model of cement hydration.

What Are Aerosols?

Aerosols are tiny particles suspended in the air. Most occur naturally, originating from volcanoes, dust storms, forest and grassland fires, living vegetation, and sea spray (Figure 1). Human ... Continue reading

Multiple fires are burning across the sourthern part of the African continent in September 2000, as shown by data from the Advanced Very High Resolution Radiometer (AVHRR) on board the NOAA 14 satellite.

The Melting Point

Physical properties of a material fall into two categories: intrinsic properties determined by the structure of the particular molecule, and bulk properties characteristic of quantities of molecules ... Continue reading

Take Two And Call Me In The Morning

Aspirin has been used for hundreds of years to relieve pain and reduce inflammation. It belongs to a group of chemicals called salicylates and was originally derived from the bark of the willow tree. ... Continue reading

Aspirin