Chapter 2: Standards of Measurement

These flashcards cover key terms related to the standards of measurement in Chapter 2.

Measurement

A number with a unit attached, often represented in metric system units such as centimeters, grams, and milliliters.

Mass

The amount of matter in an object, measured with a balance and not affected by gravity.

Volume

The amount of space occupied by a solid, liquid, or gas, typically measured in liters.

Liter (L)

The basic unit of volume in the metric system, defined as the volume of a cube with 1 dm on each side.

Density

The mass of an object divided by its volume, a measure of concentration.

Significant Digits

Numbers in a measurement that express the uncertainty associated with that measurement.

Unit Factor

A ratio of two equivalent quantities used to convert one unit to another.

Scientific Notation

A way to express very large or very small numbers in the form D.DD x 10^n, where D.DD contains significant figures.

Percent (%)

A ratio that expresses a quantity in relation to 100 parts; a way to compare parts to a whole.

Metric Prefixes

Symbols that modify base units; for example, kilo- indicates a factor of 1000.