You notice that your pump is cavitating. What is the most likely cause?

A liquid hydrocarbon is heated before pumping. What will this do?  

What happens to the density of a gas when it is compressed?

A heavy vapor cloud forms in a confined space. What hazard increases most?

A gas is compressed. Other than reducing volume, what will happen to the gas?

A mixture is too lean. What happens?

Evaporation is a phase change.

Dust becomes explosive when:

Thermal expansion causes:

Condensation results in: