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TryScience
At TryScience you will experience the excitement of science and technology through a multitude of experiments, virtual field trips, and adventures! This site connects to hundreds
of science centers around the world, providing a wide variety of educational information and activities. Available in Spanish!!
Chapter 2: Matter and Its Changes
How Do We Know That Atoms Exist? [Updated Link Coming Soon]
Scientists know that atoms exist because they can see them by using new tools such as scanning tunneling microscopes (STMs). At this site you can see a drawing that shows how a scanning
tunneling microscope works. What material is used for the probe of the STM?
