I. Matter &Energy Energy Types: KineticPotential 1.Light1.Chemical 2.Electrical2.Nuclear...
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Transcript of I. Matter &Energy Energy Types: KineticPotential 1.Light1.Chemical 2.Electrical2.Nuclear...
I. Matter &EnergyEnergy
Types:
Kinetic Potential
1. Light 1. Chemical
2. Electrical 2. Nuclear
3. Mechanical 3. Fusion - join
4. Heat 4. Fission – split
5. Electromagnetic
• Sources: Examples & Uses
1. Solar 1. Solar panel
2. Hydroelectric 2. Moving water
3. Geothermal 3.Yellow Stone N Park
4. Wind 4. Windmills
5. Tidal 5. High / Low tides
6. Chemical 6. Fossil Fuels
MatterClassification: homogeneous
heterogeneous
Properties: physical & chemical
Changes: physical, chemical, & nuclear
II. ClassificationHomogeneous :definite compositionElements 1. Oxygen 6. Calcium 2. Hydrogen 7. Arsenic3. Nitrogen 8. Gold
4. Silver 9. Sodium
5. Copper 10. Magnesium
Compounds
1.Hydrogen hydroxide 6. Silicon dioxide
2. Calcium carbonate 7. Sodium chloride
3. Sucrose 8. Carbon Dioxide 4. Carbon Monoxide 9. Sulfuric acid5. Nitric acid 10. Silver Nitrate
Heterogeneous:
No definite composition
Mixtures:
1. Rock 2. Salad 3. Soup
4. Pizza 5. Paper 6. Air
7. Concrete 8. Soil 9. Ink
10. Shampoo
Elements (Properties)
Metals Nonmetals
1. Luster 1. Dull
2. Malleable 2. Colorful
3. Ductile 3. Brittle
4. Gray 4. No conduct heat
5. Conduct heat 5. No conduct electr.
& electricity
Metalloids (Properties):
Some properties of metals and
nonmetals
Shiny
Grey
Brittle
Non-conductor of heat
Semi-conductor of electricity
Compounds (examples): 2 or more elements
Inorganic (from the earth):
1. Salt (NaCl)
2. Sand (SiO2)
3. Water (HOH)
4. Carbon dioxide (CO2)
5. Sulfuric acid (H2SO4 )
Organics (from living things):
1. Sugar (C12H22O11)
2. Ethanol (C2H5OH)
3. Simple sugar (C6 H12 O6)
4. Rubbing alcohol (C3H5OH)
5. Methanol(CH3OH)
Heterogeneous (No definite composition, 2 or more substances)
Mixtures :
A. True mixtures (pick out pieces): salad, soup, pizza, cereal, lasagna
B. Suspension (separate by gravity):
salad dressing, chocolate milk, orange juice, Snapple, YooHoo
C. Colloids (spin to separate): blood, lip gloss/stick, gel, hair spray, mousse, lotion, cream, toothpaste
D. Solutions (evaporate to separate): salt water, iced tea, Kool-aid, coffee, tea, soda
E. Alloy (2 or metals mixed): bronze, steel, jewelry gold, silver, brass
• Physical Properties divides into two types:A) Intensive (don’t depend on
the amount of matter) – boiling pt, conductivity, malleability etc.
B) Extensive (depend on the amount of matter) – mass, volume, area, energy generated etc.
III. Properties• Physical (identify a substance):
1. length, circumference, size, radius
2. volume, density, mass, area,
3. dull, color, temperature, f.p, m.p,
4. intensity, conductivity, magnetism
5. ductile, malleable, tensile strength
6. durability, flexibility, brittle
7. composition 9. permeable
8. crystalline shape 10. solubility,
Chemical (change the original substance):
1. flammable 7. react with sulfur 2.react with water 8. react with oxygen
3.react with acid 9. react with base 4.decomposition 10. composition 5.activity 11. combustion
6. oxidation 12. replacement RXN
IV. Changes In Matter• Physical Changes (does not alter the
composition):1. boil, melt 8. deposition2. freeze, solidify9. absorb3. evaporate 10. frost form4. condensation 11.sublime5. cut, tear, mix 12. rinse, drain, coat, 6. divide, cool, scrape, 7. layer, arrange, filter, color
• Chemical Changes: alters the compositions
1. burn (combustion)7. acid
2. bleach 8. base
3. oxidation 9. replacement
4. decomposition 10. dye
5. composition.
6. tarnish (Ag & Cu – sulfur reaction; react with metals)
• Nuclear Changes:
1. decay (constant)
2. fission (nuclear plant – splitting)
3. fusion (2 atoms join together)
Energy vs Changes:
Nuclear>>>>Chemical > Physical
Evidence of Chemical Change
• Bubbles
• Heat/Cold
• Light
• Sound
• Precipitate
• Change in Odor
• Change in Color