Classifying Matter:
Elements, Compounds, and Mixtures
Laura Thomas
2012
Notes:
 Find the frame notes, write down key words as we go
through the powerpoint.
Matter
 Matter is anything that has mass and takes up space.
 Matter is composed of elements
 The main phases of states of matter are
Classification of Matter
 Matter is classified as an element, compound, or a
mixture.
Oxygen (O2) is an
element
Water is a compound
H20
Salad is a mixture
Elements
 Elements are represented by circles or dots. The
dots that are the same size and color are the same
element.
Scientific Representation
Top line are molecules, bottom line are compounds
Elements
 Elements are the basic building blocks of matter
 An element is pure substance that cannot be broken
down or changed into another substance.
 An element is made of one type of atom.
 Each element is represented by a chemical symbol.
Molecules and Compounds
A molecule consists of two or more atoms of the
same element, or different elements, that are
chemically bonded together.
 An example of a molecule is
 Has a chemical formula (elemental symbols tell
element and number tells number of atoms)
 Can only be separated by chemical means, not
physically
Compounds
 Compounds are molecules made up of atoms of
two or more different elements bound
together.
 Made of elements in a specific ratio
that is always the same
 Can only be separated by
chemical means, not physically
Mixtures
 A mixture is made of elements that are held together
by physical forces, not chemical.
 No chemical change takes place
 A mixture can usually be physically separated back
into its original components
 An example is fruit salad
Chem4kids.com
Can you identify the following?
You will be shown a series of photos. Tell if each photo
represents an item composed of an element, compound,
or mixture. PUT THE ITEM IN YOUR NOTES
Review:
 An element contains just one type of atom.
 A compound contains two or more different atoms
joined together.
 A mixture contains two or more different substances
that are only physically joined together, not chemically.
 A mixture can contain both elements and compounds.
Element, Compound, or Mixture?
Rocks
Element, Compound, or Mixture?
Rocks
Element, Compound, or Mixture?
Copper
Element, Compound, or Mixture?
Copper
Element, Compound, or Mixture?
Jelly Beans
Element, Compound, or Mixture?
Jelly Beans
Element, Compound, or Mixture?
Table Sugar
Element, Compound, or Mixture?
Table Sugar
Element, Compound, or Mixture?
Diamond
Element, Compound, or Mixture?
Diamond
Element, Compound, or Mixture?
Tea
Element, Compound, or Mixture?
Tea
Element, Compound, or Mixture?
Salt
Element, Compound, or Mixture?
Salt
Element, Compound, or Mixture?
Neon Gas
Element, Compound, or Mixture?
Neon Gas
Element, Compound, or Mixture?
Salad
Element, Compound, or Mixture?
Salad
Element, Compound, or Mixture?
Pure Water
Element, Compound, or Mixture?
Pure Water
Element, Compound, or Mixture?
Aluminum
Element, Compound, or Mixture?
Aluminum
Element, Compound, or Mixture?
Lemonade
Element, Compound, or Mixture?
Lemonade
Element, Compound, or Mixture?
Silver
Element, Compound, or Mixture?
Silver
Element, Compound, or Mixture?
A beach
Element, Compound, or Mixture?
A beach
This is your ticket out!
 I will walk by and check your work in your journal.
 When I give the “ok” you may clean up and then leave.
 Get
1 m&m on the way out!!
M &M’s ??? YEA!!!!!!!!!
Find your m&m’s
in a cup
There are 2 per
table.
With your
shoulder partner,
decide how to
represent:
1. Element
2. Compound
3. Mixtures
In your journal…
Draw in your journal what these 3 look like with m&m’s
1. Element
2. Compound
3. Mixtures
Draw then label each picture as either elements,
compounds or mixture.
Tell me how the m&m’s
Represent that grouping.
Example: This is a mixture.
Several elements are represented
They are not chemically bonded.