Which of the following is not used to perform experiments with liquids?
a. beakers
b. flasks
c. graduated cylinders
d. rulers

Liquids have a medium shape and volume. The particles can move or slide past each other due to the small space available for movement. It cannot be compressed further due to the repulsive forces that act between them. The kinetic energy is medium too. These are the reason why liquids must be placed in a container or vessel to contain them. Beakers, Flasks, and graduated cylinders can contain the liquid. They are like glasses except they are shaped to achieve a specific measurement. Rulers cannot contain the liquid.

Rulers can't be used to perform experiments with liquids

The answers is bad germs in their

Answer ozone (o3) is made of three atoms of oxygen, it is a molecule;