Chemistry Questions

When large quantities of ___ are consumed, it tends to slow metabolic processes and to depress the central nervous system.

___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.

Which of the following elements has the lowest melting point?

Which of the following is not a nitrogenous fertiliser?

Which of the following is a greenhouse gas or a gas, which can deplete the ozone layer?

Which one of the following is a cation?

Pentane has _____ structural isomers.

_______________ of a material is defined as the minimum amount of the work necessary to remove a free electron from the surface of the material.