What's the Matter?
Consisting of two hydrogen atoms, and one oxygen atom, this compound expands while frozen and is responsible for severe damage to plumbing systems.
What is Water?
Heat transfer through direct contact between solids, such as heat moving through a copper pipe during soldering, is called this.
What is Conduction?
The transition of water from a liquid to a gas is known as this phase change.
What is Vaporization (or Evaporation, Boiling)?
Unlike weight, this property of an object does not change based on the gravitational field it is in.
What is Mass?
The official abbreviation 'UA' stands for the United Association of Journeymen and Apprentices of this industry.
What is the Plumbing and Pipefitting Industry?
Orbiting in around the nucleus, atoms have the same number of these as they do protons.
What is an Electron?
This term describes the amount of heat energy requires to raise the temperature of 1 pound of water by 1 degree Farenheit.
What is a BTU (British Thermal Unit)?
When steam cools down inside a radiator and turns back into liquid water, it undergoes this process.
What is Condensation?
Defined as mass per unit volume, this physical property determines whether an object will float or sink in another fluid.
What is Density?
The UA was founded in Washington DC on October 11th of this year.
What is 1889?
Represented by the chemical symbol Pb, this non-ferrous metal is one of the oldest used in the plumbing trade, and is in fact where the word plumber derives from it's Latin root.
What is Lead?
Piping loops, offset bends, and bellows-style joints are installed in long hydronic piping runs to absorb this physical phenomenon.
What is Thermal Expansion?
Heat absorbed or released during a phase change that occurs at a constant temperature and pressure is known as this type of heat.
What is Latent Heat?
The ratio of a substance's density compared to the density of pure water at 39.2 F is called this.
What is Specific Gravity?
Elected by the membership of the local to conduct the day-to-day business of the union, as well as make decisions to protect the interests of its members, this position is known as this.
What is the Business Manager?
The eighth group of the periodic table contains this elements which known both for being non-reactive, and not associating with the common rabble.
What are Noble Gases?
Heat added to a substance that causes a measurable rise in temperature without changing its physical state is called this.
What is Sensible Heat?
Both liquid and gases share similar flow properties, and are grouped together in this category.
What are Fluids?
This substance, unlike most, decreases in density when it freezes.
What is Water?
The UA is roughly this many members strong.
What is 400,000?
The term for a mixture of elements that includes at least one metal that can vary greatly in crystalline structure and physical properties depending on how its made.
What is an Alloy?
When calculating piping movement, this physical property dictates how many inches a 100 foot pipe will lengthen per degree change in temperature.
What is the Coefficient of Linear Expansion?
The phase change where a refrigerant changes directly from a solid to a gas without passing through a liquid state, as seen with dry ice.
What is Sublimation?
This is the weight of a gallon of water at room temperature.
What is 8.3 Pounds?
This historic labor leader, who served as president of the AFI-CIO for 24 years starting in 1955, began his career as a UA plumber from New York.
Who is George Meany?