Imagine that you can see individual molecules. You watch a small collection of molecules that are moving around slowly while vibrating and bumping against each other.
The slower moving molecules then start to line up, but as they do so their vibrations increase. Soon all the molecules are aligned and vibrating about fixed positions. What is happening? A) The sample is being cooled and the material is freezing.
B) The sample is being heated and the material is boiling.
C) The sample is being cooled and the material is condensing.
D) The sample is being heated and the material is melting.
E) The sample is unchanged.
Question 2
What is acting as the energy storage media in photosynthesis?
A) carbohydrates
B) chlorophyll
C) carbon dioxide
D) oxygen
E) water
Hydrogen Bonds Can Form Between or Within Molecules
Why Cells Are Small 2
Amazing NASA Pictures Collection
Amazing NASA Pictures Collection
Example of a collection letter.
Digestion & Absorption in the Small Intestine