Chemistry › States of matter › Atoms and Brownian motion

Age level:  13-15

Questions

1. What is an atom? Draw and label a picture of an atom of beryllium.
   
   
2. Alchemists of the 14th and 15th centuries unsuccessfully tried to turn lead into gold. Lead has only 3 more protons than gold. Why do you think it is so hard to turn lead into gold?
   
   
3. Why is very special equipment needed to see atoms?
   
   
4. Describe in your own words what causes Brownian motion.
   
   

Answers