An object at rest will stay at rest while an object in motion will stay in motion unless acted on by an external force.

# Tag: privatetutoring

## Mole

A unit of measure in chemistry.

It is the atomic weight of an atom, or molecule, in grams.

## Factoring

The process by which a mathematical expression is simplified into components, smaller and simpler, that when multiplied together result in the original expression.

## Displacement

A vector that represents the change in position of an object.

**Vector: **a quantity that has both magnitude and direction.

## Atom

A fundamental piece of matter. It is the smallest object that retains the properties of the element.

It is composed of a positively charged nucleus and a negatively charged cloud of electrons.

## Vinculum

Most commonly the horizontal line above the repetend in a decimal.

Previously, it was used to indicate a group of terms in a mathematical expression. This has been replaced with parentheses.

Repetend: a repeated number or series of numbers; similarly, it is also means a repeated word or phrase.