Slide 1

Units & Measurements
Section 2.1


Slide 2



Define SI Base Units



Explain how adding a prefix changes a
unit



Convert between Metric Units


Slide 3

Chemists use an internationally recognized
system of units to communicate their
findings.


Slide 4



Systeme Internationale d’Units (SI) is an
internationally agreed upon system of
measurements.


Slide 5



A defined unit in a system of measurement.

Example:

Meter
Liter
Gram


Slide 6


Slide 7

A unit that is defined by a combination of
base units.


Slide 8


Slide 9

The first known use of the zero was
by 7th century Hindu,
Braghmagupta. Ancient Egyptians
and Greeks mathematicians
computed without using the zero.
However, ancient Babylonians used
a place holder similar to the zero.


Slide 10



English Standard



Used in United States & Liberia



Yards, Miles, Quarts, & Galloons


Slide 11

Quantity

Base Units

Unit Abbreviation
S

Mass

Kelvin
Length

Convert 200 ,000 centigrams to grams