Length

Definition

Length is a measurement of the extent of an object or distance from one point to another in one dimension. It is typically measured in units such as meters (m), centimeters (cm), or inches (in).

5 Must Know Facts For Your Next Test

1. Length is a fundamental physical quantity and is often considered one of the base quantities in the International System of Units (SI).
2. The meter (m) is the SI base unit for length.
3. Common tools for measuring length include rulers, tape measures, and calipers.
4. In chemistry, precise measurements of length are crucial for experiments that involve molecular dimensions and reaction container sizes.
5. $$\text{Length} = \text{Distance between two points along a straight line}$$

Review Questions

• What is the SI base unit for measuring length?
• Name three tools commonly used to measure length.
• Why are precise measurements of length important in chemistry?

Related terms

Meter:

The SI base unit for measuring length, abbreviated as 'm'.

Volume:

A measure of the amount of space an object occupies, often derived from length measurements.

Caliper: A tool used to measure the distance between two opposite sides of an object with high precision.