A ball-and-stick model of a molecule of formaldehyde, CH2O, is made from the following components:

one black ball
one red ball
two white balls
three sticks
What do the sticks represent?
oxygen atoms
oxygen atoms

carbon atoms
carbon atoms

hydrogen atoms
hydrogen atoms

bonds between atoms

The sticks in the ball-and-stick model represent the bonds between atoms. In the case of formaldehyde (CH2O), there are three sticks to represent the bonds between the carbon and hydrogen atoms, and between the carbon and oxygen atoms.

The sticks in the ball-and-stick model of formaldehyde represent the bonds between atoms. In this case, there are three sticks, which represent the bonds between the carbon atom (black ball) and the two oxygen atoms (red ball and one white ball), as well as the bond between the carbon atom and the two hydrogen atoms (two white balls).

The sticks in the ball-and-stick model of formaldehyde represent the bonds between atoms. In this particular model, there are three sticks, which represent the bonds between the atoms of carbon (C), hydrogen (H), and oxygen (O) in the molecule. This means that each stick connects two atoms, and there are a total of three sticks, indicating three bonds in the formaldehyde molecule.