Introduction to scientific principles

Front

What are ferrous metals?

Back

Metals that contain iron, are magnetic, and will corrode easily if not treated.

Front

What are alloys?

Back

A mixture of two or more metals, commonly used in the plumbing industry.

Front

What are non-ferrous metals?

Back

Metals that do not contain iron, such as copper, lead, zinc, and aluminium.

Front

What is a thermoplastic?

Back

A material made from polymer resin that can be heated and re-shaped but becomes brittle when frozen. These plastics are recyclable.

Front

What is mass?

Back

An amount of substance measured in kilograms.

Front

What is weight?

Back

The force of gravity pulling on a mass, calculated as Weight = mass x gravity. 1 kg = 10N (9.81N).

Front

What is gravity?

Back

A force of attraction between masses, with a standard value of 9.81N on Earth.

Front

What is density?

Back

The measure of how tightly packed molecules are in a material, calculated as Density = mass divided by volume.