Chemistry and Measurements

Flashcards about units of measurement in chemistry.

International System of Units (SI)

An official system of measurement used worldwide for units of length, volume, mass, temperature, and time.

Volume

The space occupied by a substance, commonly measured in liters (L) and milliliters (mL) by chemists.

Length

Measured in units of meters (m) in both the metric and SI systems, and centimeters (cm) by chemists.

Mass

A measure of the quantity of material it contains, with the SI unit of kilogram (kg), often measured in grams (g) by chemists.

Temperature

A measure of how hot or cold an object feels, measured on the Celsius (°C) scale, or Kelvin (K) scale in the SI system.

Time

Measured in units of seconds (s) in both the metric and SI systems, based on an atomic clock.

Volume Relationships

1 L = 1000 mL; 1 L = 1.06 qt; 946 mL = 1 qt

Length Relationships

1 m = 100 cm; 1 m = 39.4 in; 1 m = 1.09 yd; 2.54 cm = 1 in

Mass Relationships

1 kg = 1000 g; 1 kg = 2.20 lb; 454 g = 1 lb