1. CLASSIFYING MATTER:
Defining Matter

2. OUTCOME QUESTION(S): S1-2-09 Vocabulary & Concepts
How do you classify matter using the words: element, compound, atom, molecule, mixture and pure?
Vocabulary & Concepts 
Pure Mixture
Compound Molecule Diatomic
Heterogeneous Homogeneous Metalloid

3. Anything that has mass and takes up space.
Matter:
Anything that has mass and takes up space.
That means Volume

4. Pure Every particle that makes up a substance is the SAME. Mixture
Substance contains
more than one kind
of particle.
If you can “reach in” and grab a different thing each time – it’s a mixture…

5. Smallest particle of an element - atom 2. Compounds
PURE
Elements
Simplest form matter
Smallest particle of an element - atom
2. Compounds
Two or more elements chemically bonded
Smallest particle of an compound – molecule
A bucket of gold atoms (Au) and a bucket of water molecules (H2O) are both PURE since in both cases there is only ONE type of particle

6. You’ll look at this more another time
Element:
Sodium – all pure sodium atoms
Compound:
Salt – all pure sodium chloride molecules
It’s possible to have compounds of the same atoms:
Called diatomic elements
Oxygen gas – O2
Hydrogen gas – H2
You’ll look at this more another time

7. One kind of particle (atom or bonded)
same
different
One kind of particle (atom or bonded)
More than one particle (NOT bonded)

8. Can’t see it – BUT know it’s a mixture…
Homogeneous (can not see the different particles)
Mixture is evenly distributed – “dissolved”
Cannot easily separate different particles
Milk
Coffee
Blood
Smooth peanut butter
Can’t see it – BUT know it’s a mixture…

9. Heterogeneous (can see the different particles)
Mixture is not evenly distributed
Different particles can be separated easily
Salad
Pizza
Bubble tea
Crunchy peanut butter
I can see it’s a mixture!

10. Another way to classify matter is to put it into easy categories
Metals
Most common form of matter – 75% of elements
Metals demonstrate similar (but NOT identical)
physical and chemical properties
Non-metals
15% of elements
Non-metals demonstrate properties that are the
opposite of metals
Another way to classify matter is to put it into easy categories

11. A “staircase” on every Periodic Table separates the metals from the non-metals

12. You don’t have to memorize – just know where there are
Metalloids:
Elements on the staircase – 6% of elements
Exhibit properties between metal / non-metals.
You don’t have to memorize – just know where there are

13. CAN YOU ANSWER THESE QUESTIONS? S1-2-09
How do you classify matter using the words: element, compound, atom, molecule, mixture and pure?
Vocabulary & Concepts 
Pure Mixture
Compound Molecule Diatomic
Heterogeneous Homogeneous Metalloid