1. Properties of Matter

2. Matter Matter – anything that has mass and volume
Pretty much everything!

3. How Can We Describe Matter?
Properties – the characteristics of a substance
What are the properties of matter?
Mass, volume
Color, size, shape, etc.

4. What’s the Matter? Matter is grouped into three phases Solids Liquids
Gases

5. Solids
Particles are close together and can vibrate but cannot move apart because of their strong attractions for each other
Have a definite shape and volume

6. Liquids Particles are farther apart and can slide past each other
Have a definite volume, but no definite shape; they take the shape of the container they are in

7. Gases
Particles are even farther apart and are free to move anywhere in a container
Have no definite volume or shape

8. Let’s Compare
Particles in Matter

9. Your Task
Make a tri-fold brochure comparing solids, liquids and gases. It must include:
Definitions
Drawings of the particle arrangements
Examples – at least two!

10. Phase Changes

11. How Phases Change Solid to Liquid
Melting – the change of a substance from a solid to a liquid when heat is added
Liquid to Solid
Freezing – the change of a substance from a liquid to a solid when heat is removed

12. How Phases Change Liquid to Gas
Vaporization – the change of a substance from a liquid to a gas when heat is added
Gas to Liquid
Condensation – the change of a substance from a gas to a liquid when heat is removed

13. 3 Minute Chat Discuss the following, explaining your answers:
What are pure substances?
What are mixtures?
How are they alike?
How are they different?

14. Elements
Element – pure substance that cannot be separated by physical or chemical means - atoms
Any one element on the periodic table!
Ex.

15. Compounds
Compound – substance made of two or more elements that are joined by chemical bonds - molecules
Can only be separated by chemical means, not physical
H2O
NaCl
Two or more elements

16. Mixtures
Mixture – a combination of two or more pure substances that are not chemically combined
Can physically separate

17. Stuff Lab Is the “stuff” an element, a compound, or a mixture?
If stuff is a mixture, how can you separate the components?
Physical methods

18. How to Fold Filter Paper

19. Homogeneous Mixtures
Two or more substances spread out evenly without settling - the same throughout
Appears clear
Also called solutions
Iced tea
Salt water

20. Heterogeneous Mixtures
A mixture in which different parts are easily distinguished
Sandwich pencil (lead, wood, eraser)

21. Heterogeneous Mixtures
Colloid – heterogeneous mixture that never settles
Milk
Can tell by Tyndall Effect
Scattering of light by the particles
in the mixture

22. Heterogeneous Mixtures
Suspensions – contain a liquid with visible particles that settle out when it stands – also have Tyndall Effect
Orange juice
Different from a colloid or
solution because particles
will settle out

23. Whiteboard Check
What type of mixture (homogeneous or heterogeneous) is each of the following:
Chocolate chip cookie
Coffee
Apple juice
Lucky Charms® cereal
Trail mix