A Permanent Magnet Is a Piece of Magnetic Material That

question 18

True/False

A permanent magnet is a piece of magnetic material that has been magnetized and can hold its magnetic strength for a reasonable length of time.

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Definitions:

Compounds

Substances formed from two or more elements that are chemically combined in fixed ratios.

Molecular Formula

A notation representing the number and type of atoms in a molecule without indicating how the atoms are bonded.

Line-Angle Structure

A simplified diagrammatic representation of chemical structures where the ends and bends of lines represent carbon atoms.

Condensed Formulas

A method of writing a formula for organic molecules in a linear form that shows the arrangement of atoms without displaying bonds.