1. Chemistry The study of all matter and the changes it undergoes
The study of EVERYTHING around us!

2. Matter Anything that has mass and takes up space.
Anything that has a weight on Earth

3. The Atom The smallest unit of matter
We can’t see individual atoms – they’re too small!
Whatever we can see are large groups of atoms together!

4. States of Matter three different states: solid, liquid and gas
How they differ in behavior:
How far apart atoms are spaced
How fast the atoms move
Volume (how they take up space)
Shape
Compressible/expandable

5. Solid Tightly packed matter not much movement Holds its own shape
Definite volume
Not compressible
Not much expansion when heated

6. Liquid Matter less closely packed than solid moves a little
Takes shape of container
Definite volume
Not compressible
Slight expansion upon heating

7. Gas Matter is spaced out moves quickly Takes shape of container
Fills volume of container (not definite)
Easily compressible
Easily expandable

8. Examples: For the following examples: 1. Helium in a balloon
Hold up 1 finger for a SOLID
Hold up 2 fingers for a LIQUID
Hold up 3 fingers for a GAS
1. Helium in a balloon
2. Gatorade
3. Motor Oil
4. Cupcake
GAS!
LIQUID!
SOLID!

9. State of matter
Particle diagram
Atom spacing
Atom movement
Definite shape
Definite volume
Compressible
expandable
Solid
Liquid
Gas
Loosely packed
Far Apart
Tightly packed
Not much
A little
A lot
yes no no
yes
yes no no no
yes no no
yes

10. Homework: State of Matter Poster
Due: Friday
Task: On a blank, white sheet of paper…
Pick one state of matter (solid, liquid, gas)
List its properties (definite volume, particles, etc.)
Draw its particle diagram (what the atoms look like)
List at least 3 real-life examples
Draw at least one of your real-life examples