1. 3.6 Review Properties of Matter

2. Explain the difference between the atom of an element and a compound
One type of atom; cannot break it down any further w/o changing properties.
Compound:
Atoms evenly distributed; two or more elements fixed properties

3. Explain the difference between a compound and a mixture
A combination of a substance that are chemically bonded
Mixture:
A combination of a substance that is not chemically bonded

4. Explain the difference between a homogeneous mixture and a heterogeneous mixture.
Where you can see the parts of the mixture that are different from one another.
Homogeneous Mixture
Where the substances are so evenly distributed that it is hard to distinguish one substance from another.

5. Give an example of a homogenous mixture.
Homogeneous Mixture
Kool-Aid
Lemonade
Glass
Salt Water (Seawater)
Soft Drinks

6. Give an example of a heterogeneous mixture.
Sand
Salad
Bottle of salad dressing
Toppings on a Pizza
Dirt Water

7. Explain the difference between a solution, a suspension and a colloid.
A mixture that forms when substances dissolve and form a homogeneous mixture.
Small Particles
Suspensions:
A heterogeneous mixture that separates overtime and into layers.
Large Particles.
Colloid:
A mixture that contains some particles in a solution and the large particles in a suspension.
Medium Particles

8. Give an example of each
Solution: Kool-Aid, Lemonade, Salt Water Suspensions: Dirt Water, Sand Colloid: Milk, Jell-O, Butter, Fog

9. Define a physical property
A property that can be observed without a chemical change.

10. List the physical properties mentioned in class and define them.
Viscosity: A substances resistance to flowing
Conductivity: The ability to transfer heat or electricity
Malleability: Ability to be hammered without shattering
Hardness: Harder materials scratch softer materials
Melting Point: The point a substance changes from a solid to a liquid
Boiling Point: The point a substance boils
Density: The ratio of mass per volume

11. Define a chemical property
Occurs when a substance is changing into a different substance.

12. List the chemical properties mentioned in class and define them.
Flammability: A materials ability to burn in oxygen Reactivity: A materials ability to combine and react with other chemicals

13. What three changes may occur when a chemical change takes place.
Change in color
Production of gas
Formation of a precipitate

14. 10. Define whether each of the following is heterogeneous and homogeneous.
Kool-Aid:
Homogeneous
Salad:
Heterogeneous
Salt-water

15. 11. Define the Tyndall effect.
The scattering of light by colloidal particles.

16. 12. What is the process of distillation?
The process of separating substances by evaporating a liquid and recondensing its vapor

17. 13. 3 Physical Changes
Phase Change
Tearing/Breaking
Weathering

18. chemical changes
Tarnish
Burning
Alka-seltzer in water

19. 15. What is the law of conservation of mass?
The mass of all substances that are present before a chemical reaction equals the mass of all the substances that remain after the change.

20. Physical and Chemical Weathering
Frost weathering, the freezing and breaking down of rock through expansion
Acid rain combining with limestone to become calcium hydrogen carbonate

21. Section #5 Packet due tomorrow!!
5.8 QUIZ Tomorrow
Any Questions
Section #5 Packet due tomorrow!!