1. Chemistry Joke
What do you call iron blowing in the wind?
Febreeze!

2. “Matter and Change”

3. Chemistry - the study of matter and its changes
Matter - anything that has mass and takes up space
Air and smoke are examples of matter
Light and heat are energy, not matter
Mass - quantity of matter (numbers of atoms or molecules)
Weight - measure of gravitational attraction
Dependent on gravity of location

4. Study of Matter States of Matter Classifications of Matter
Physical Properties of Matter
Physical Changes of Matter
Chemical Properties of Matter
Chemical Changes of Matter

5. States of Matter Gas - indefinite volume and shape
Liquid - definite volume, indefinite shape
Solid - definite volume and shape
Plasma – a gas that has a charge because it has been heated and has lost its electrons.

6. Classifications of Matter
plasma

7. Pure Substances Elements Compounds
Simplest form of matter / building blocks
Composed of only one type of atom
Cannot be simplified
Ex: Any element on periodic table
Compounds
Substances that can be separated only by chemical means into simpler substances
Can be written as a chemical formula
Ex: water, H2O; baking soda, NaHCO3; ammonia, NH3

8. Mixtures 2 Types Can be separated by physical means Homogeneous
Composed of only one phase of matter
Completely uniform throughout
Also called a solution
Ex: salt water, air
Heterogeneous
Non-uniform distribution
Ex: apple, salad
Can be separated by physical means
Filtration, distillation, chromatography

9. Physical Separation of a Homogeneous Mixture by Distillation
liquid
alcohol and water
alcohol

10. Physical Separation of a Heterogeneous Mixture Using Magnetism

11. Physical Separation of a Homogeneous Mixture Using Chromatography

12. Physical Properties of Matter Properties that can be observed and measured without changing the composition of the substance
Color
Solubility
Electrical Conductivity
State of Matter (solid, liquid, gas)
Density
Thermal Conductivity
Melting and Boiling point
Metallic Characteristics
(malleability, ductility, & luster)
Magnetic Properties

13. Physical Changes of Matter Changes in Form not Substance
Phase changes are physical!!
Melting, freezing, boiling, condensing, evaporating
Tearing, breaking, cutting, crushing
Dissolving is a physical change!!

14. Chemical Properties of Matter
Ability of a substance to undergo a chemical reaction and form a new substance
Flammability / Combustibility
Acidic or basic
Reactivity

15. Chemical Changes of Matter
Indicators that a chemical change may have happened:
Energy is absorbed or released (temperature changes)
Color changes
Gas is produced (bubbling, fizzing, or odor change; smoke)
Precipitate is formed - a solid that separates from solution (won’t dissolve)
Irreversibility - not easily undone

16. Words Associated with Chemical Change
Burn
Decompose
Corrode
Rot
Ferment
Cook
Rust
Explode

17. Chemical Reactions of Matter
Starting substances called reactants change to form products.
Reactant + Reactant → Product

18. The Law of Conservation of Mass (of Matter!)
In any physical or chemical change, mass is neither created nor destroyed; it is CONSERVED!
In other words, the mass of the reactants will ALWAYS equal the mass of the products.

19. 43.43 g Original mass
= g Final mass
reactants
→ product

20. Chemistry Joke
Q: H2O is water and H2O2 is hydrogen peroxide. What is H2O4?
A: Drinking, Bathing, Etc.!