Rare-earth elements are not actually rare per se, but they appear in low concentrations in the minerals they can be found in.

Which of the following is not needed for galvanic corrosion to happen?

Which of the following best describes material's ability to resist elongation?

Ceramics tend to be fragile.

Specific heat capacity describes material's ability to store heat energy.

In which chemical bond do electrons move freely in a crystal as glue-like "electron gas"?

Polymers tend to be soft.

Pitting corrosion typically occurs in a point where a thin layer of passivation breaks.

A piece can break under tensions lower than its tensile strength if the stress is repetitive. This is called...

Here are four statements about resistance. Select the one which is false.