GENERAL CHEMISTRY

International System of Units (SI)

A standardized system of measurement used globally, based on the metric system, including seven base units.

Base Units

The seven fundamental units in the SI system:meter, kilogram, second, ampere, kelvin, mole, and candela.

Metric System

A decimal-based system of measurement that includes units like meters, liters, and grams, facilitating easy conversion and calculation.

Metric Conversion Chart

A reference tool that shows the relationships between different metric units of measurement, aiding in conversions.

Length Units

Units of measurement for length in the metric system, including millimeters (mm), centimeters (cm), meters (m), and kilometers (km).

Mass Units

Units of measurement for mass in the metric system, including milligrams (mg), grams (g), and kilograms (kg).

Volume Units

Units of measurement for volume in the metric system, including milliliters (mL) and liters (L).

Metric Prefix

A prefix that denotes specific powers of ten in the metric system, such as kilo-, mega-, and milli-.

Accuracy

The closeness of a measured value to the true value.

Precision

The consistency of repeated measurements, regardless of their closeness to the true value.

Percent Error

The difference between the estimated value and the actual value expressed as a percentage of the actual value.

Significant Numbers

The digits in a number that contribute to its precision, including all non-zero digits, zeros between significant digits, and trailing zeros in a decimal number.