1. Chapter 2 Matter and Change . 2.2 Mixtures 2.1 Properties of Matter
2.3 Elements and Compounds
2.4 Chemical Reactions
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2. 5.0 grams of pure gold has a density of 19.32 g/cm3.
Describing Matter
Do Now:
5.0 grams of pure gold has a density of g/cm3.
What is the density of a 15 gram sample of pure gold?
What is the mass of exactly one half of the 5g sample of pure gold?
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3. What is matter made up of?
There is a key difference between elements
Elements
Simplest form of matter that has a unique set of properties Examples: O - Oxygen H - Hydrogen Cu - Copper

4. The Periodic Table

5. Symbols and Latin Names for Some Elements
Sodium Na
natrium
Potassium K
kalium
Antimony Sb
stibium
Copper Cu
cuprum
Gold Au
aurum
Silver Ag
argentum
Iron Fe
ferrum
Lead Pb
plumbum
Tin Sn
stannum

6. What is matter made up of?
There is a key difference between elements
Elements
Compounds
Simplest form of matter that has a unique set of properties Examples: O - Oxygen H - Hydrogen Cu - Copper
Substance that contains 2 or more elements chemically combined in a fixed proportion. Examples: H2O - Water C12H22O11 - Sucrose CO2 – Carbon Dioxide

7. There is a key difference between elements Chemical Formulas
Distinguishing Elements and Compounds
There is a key difference between elements Chemical Formulas
Represent compounds
Subscripts tell you how many of each element are in a compound
Examples:
Table Salt: NaCl
Ammonia: NH3

8. There is a key difference between elements and compounds.
Distinguishing Elements and Compounds
There is a key difference between elements and compounds.
Compounds can be broken down into simpler substances by chemical means, but elements cannot.

9. Matter Classification
Has mass and takes up space
Mixture
Substance
Physical blend of 2 or more substances,
not chemically combined
Uniform and definite composition
Homogeneous
Mixture
Heterogeneous
Mixture
Element
Compound

10. Substance - Matter that has a uniform and definite composition
Describing Matter
Substance - Matter that has a uniform and definite composition
Mixture: physical blend of two or more substances that are not chemically combined
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11. Heterogeneous Mixture Homogeneous Mixture
Describing Matter
Heterogeneous Mixture
Homogeneous Mixture
Composition is NOT uniform throughout
Examples:
Salad
Chocolate Chip Cookie
Chicken Noodle Soup
Composition is uniform throughout
Also called a solution.
Examples:
Air Steel
Vinegar Salt Water
Milk
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12. Read Separating a Mixture of Elements and Compounds Lab.
Describing Matter
Do Now:
Read Separating a Mixture of Elements and Compounds Lab.
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13. Differences in physical properties can be used to separate mixtures.
Separating Mixtures
Separating Mixtures
Differences in physical properties can be used to separate mixtures.
Examples:
Filtration
Distillation
Magnetism
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14. Separates solids from a liquid in a heterogeneous mixture.
Separating Mixtures
Filtration
Separates solids from a liquid in a heterogeneous mixture.
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15. Distillation Separating Mixtures
Process which separates mixtures of liquids with different boiling points.
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16. END OF 2.2
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