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Chapter 1 Matter, Measurements, & Calculations 1.1 What Is Matter? Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings
Chapter 1 Matter, Measurements, &
Calculations1.1 What Is Matter?
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
Matter
Matter is the “stuff” that makes up all things and is too small to be seen with the human eye.
Copyright © 2005 by Pearson Education, Inc.Publishing as Benjamin Cummings
Anything that has mass and occupies space is matter.
Mass is a measurement of the amount of matter in an object. Ex. A bowling ball vs. a basket ball
Weight is a measurement of the gravitational force acting on an object.Ex. Dropping a bowling ball vs. a feather
Mass vs. Weight
Pile of unorganized Legos
Credit: Courtesy of Julie Millard
Molecules, like these Legos, can be combined in different ways
Credit: Courtesy of Julie Millard
Molecules, like these Legos, can be combined in different ways
Credit: Courtesy of Julie Millard
Chemical compounds are pure substances made of atoms of different elements combined in a definite, fixed ratios.Ex. Water will have the same property no matter where it comes from.
A molecule is the smallest chemical unit of a compound that retains the composition and properties of the compound and can exist independently. Ex. 2H’s and 1O
